CN109209471B - Dust device is used in construction of tunnel drilling and blasting method - Google Patents
Dust device is used in construction of tunnel drilling and blasting method Download PDFInfo
- Publication number
- CN109209471B CN109209471B CN201811341180.4A CN201811341180A CN109209471B CN 109209471 B CN109209471 B CN 109209471B CN 201811341180 A CN201811341180 A CN 201811341180A CN 109209471 B CN109209471 B CN 109209471B
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- Prior art keywords
- dust
- supporting sleeve
- water delivery
- dust suction
- inclined rod
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/20—Drawing-off or depositing dust
Abstract
The invention discloses a dust-settling device for tunnel drilling and blasting construction, wherein a dust-settling system is arranged on a vehicle body of the dust-settling device, the dust-settling system comprises a motor, an output shaft of the motor is connected with a right end shaft of a dust suction barrel, a left end port of the dust suction barrel is a dust suction port, the left end of the dust suction barrel is fixedly connected with one end of an inclined rod, and blades are arranged on the inclined rod; the middle part cover that a dust inhales a section of thick bamboo is equipped with the support sleeve, has seted up first ring channel in the support sleeve, has seted up a plurality of dust absorption air current via holes on the dust inhales a section of thick bamboo lateral wall of first ring channel position department, and first ring channel is connected with dust collecting equipment through the dust absorption conveyer pipe, and dust collecting equipment is connected with the power electricity through dust absorption control switch, and the motor passes through motor control switch and is connected with the power electricity. The device can generate uniform and strong negative pressure suction at the dust suction port, and can greatly improve the dust suction efficiency.
Description
Technical Field
The invention relates to the field of dust removal in tunnel construction, in particular to a dust-settling device for tunnel drilling and blasting construction.
Background
The drilling and blasting method is a main method for tunnel construction due to the characteristics of flexibility, rapidness and high efficiency, however, the drilling and blasting method can generate a large amount of dust and blast fume in the tunnel construction, and the dust and the blast fume can have adverse effects on the health of constructors due to the fact that the tunnel is a relatively closed space, so that dust falling treatment needs to be carried out on the dust and the blast fume in the tunnel.
At present, a tunnel construction ventilation system generally adopts a wet dust removal technology or a dry and wet dust removal technology, wherein the wet dust removal technology mainly comprises spraying water, water curtain dust removal and the like; for the dry and wet dust removal technology, a dust collection and filtration method is usually adopted for air containing dust, and an umbrella-shaped suction end connected with dust removal equipment is usually adopted to suck the air containing dust, and then the dust removal treatment is carried out through the dust removal equipment. Referring to fig. 2, the existing umbrella-shaped suction end is mainly a conical suction port 19, the wide end of the conical suction port is used for sucking air with dust, the narrow end of the conical suction port is connected with a dust removing device through a conveying pipeline, because the umbrella-shaped suction end is in a conical structure, negative pressure airflow 20 generated only in the space right in front of the narrow end and the narrow end is strongest, the suction negative pressure generated in the space close to the conical inner side wall and the wide end of the conical structure is relatively weaker, the force for sucking dust in the places is greatly weakened, and therefore the dust suction efficiency is reduced.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide a dust-settling device for tunnel drilling and blasting construction, which can generate uniform and strong negative pressure suction at a dust suction port and greatly improve dust suction efficiency.
The technical scheme of the invention is as follows: a dust-settling device for tunnel drilling and blasting construction comprises a vehicle body, wherein the vehicle body comprises a power system, a dust-removing system is arranged on the vehicle body, the dust-removing system comprises a motor arranged at one end of a vehicle head of the vehicle body, an output shaft of the motor is connected with a right end shaft of a dust suction barrel, a left end of the dust suction barrel is a dust suction inlet, a right end of the dust suction barrel is closed, the left end of the dust suction barrel is fixedly connected with one end of an inclined rod, a blade is arranged on the outer wall of the inclined rod and positioned on one side of the central axis of the dust suction barrel, and the blade is used for enabling a dust-carrying air fan positioned on one side of the central axis of the dust suction barrel and near the inclined rod to; the middle part cover that the dust inhales a section of thick bamboo is equipped with the support sleeve, and on the support sleeve was fixed in the automobile body through the supporting seat, set up the first ring channel that encircles the support sleeve inside wall in the support sleeve, a plurality of dust absorption air current via holes have still been seted up on the dust inhales a section of thick bamboo lateral wall of first ring channel position department, first ring channel is linked together with the dust absorption delivery channel of seting up in the support sleeve lateral wall, and dust absorption delivery channel is connected with the dust collecting equipment who is fixed in on the automobile body through the dust absorption conveyer pipe, dust collecting equipment passes through dust absorption control switch and is connected with the power electricity on locating the automobile body.
The dust suction tube is connected with the supporting sleeve in a sliding and sealing mode through the sealing rubber ring, so that dust cannot be leaked out along a gap between the dust suction tube and the supporting sleeve when the dust suction tube rotates in the supporting sleeve.
The number of the blades is multiple, the blades are distributed along the longitudinal direction of the inclined rod, and the area of each blade is reduced from the suspension end of the inclined rod to the end of the inclined rod connected with the dust suction barrel.
The number of the inclined rods is multiple, and the inclined rods are uniformly distributed along the circumferential direction of the dust suction cylinder.
The number of the inclined rods is 3, and each inclined rod is provided with 3 blades.
The included angle between the surface of each blade on each inclined rod and the central line of the inclined rod is 30-60 degrees.
Each of the inclined rods is provided with a plurality of water mist nozzles along the longitudinal direction, the water mist nozzles are arranged on the outer wall of one side of the inclined rod, which is opposite to the central axis of the dust suction cylinder, water delivery channels communicated with the water mist nozzles are arranged in the inclined rods, the water delivery channels are also connected with water delivery connecting pipes arranged in the dust suction cylinder in a penetrating mode, the water delivery connecting pipes are connected with water passing holes arranged on the side wall of the dust suction cylinder, the water passing holes are communicated with second annular grooves arranged in the supporting sleeve and surrounding the inner side wall of the supporting sleeve, the second annular grooves are connected with water delivery equipment fixed on a vehicle body through water delivery pipes, and the water delivery equipment is electrically connected with the power supply through water delivery switches.
The dust collection equipment comprises a shell, wherein a dust collector and a dust storage box connected with the dust collector are arranged in the shell, the dust collector is connected with the dust collection conveying pipe, and the dust collector is electrically connected with a dust collection control switch; the water delivery equipment comprises a shell, wherein a high-pressure water pump and a water storage tank connected with the high-pressure water pump are arranged in the shell, the high-pressure water pump is connected with the water delivery pipe, and the high-pressure water pump is electrically connected with a water delivery switch.
The supporting sleeve is fixed with a protective mesh enclosure, and the protective mesh enclosure is used for accommodating the inclined rod and a conical track formed by the rotation of the inclined rod around the central axis of the dust suction cylinder; and the vehicle body is also provided with a dust concentration detection device for detecting the concentration of dust in the air.
A bearing is arranged between the dust suction cylinder and the supporting sleeve; the vehicle body is provided with a control panel, and the motor control switch, the dust collection control switch and the water delivery switch are all arranged on the control panel.
The invention provides a dust-settling device for tunnel drilling and blasting construction, which can generate suction negative pressure at a dust suction inlet 4-1 to suck dust-carrying air, and simultaneously can generate a conical suction inlet through a high-speed rotating inclined rod 5, and simultaneously, blades 6 arranged on the inclined rod 5 can also fan the dust-carrying air which is positioned at one side of the central axis of a dust suction cylinder 4 and is near the inclined rod 5 to the direction of the dust suction inlet 4-1 when the inclined rod rotates, so that the defect of weak suction negative pressure in the circumferential space inside the conical suction inlet is overcome, and meanwhile, the dust-carrying air at the outer side of the inclined rod 5 of the conical suction inlet can also be sucked into the dust suction inlet 4-1; the device can generate more uniform and stronger negative pressure suction at the conical suction inlet, and can greatly improve the dust collection efficiency.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the umbrella-shaped suction end structure in the prior art.
Detailed Description
An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.
Referring to the figure 1, the invention provides a dust-settling device for tunnel drilling and blasting construction, which comprises a vehicle body 1, wherein the vehicle body 1 comprises a power system 2, a dust-removing system is arranged on the vehicle body 1, the dust-removing system comprises a motor 3 arranged at one end of a vehicle head of the vehicle body 1, an output shaft of the motor 3 is connected with a right end shaft of a dust suction barrel 4, a left end opening of the dust suction barrel 4 is a dust suction inlet 4-1, a right end opening of the dust suction barrel 4 is closed, the left end of the dust suction barrel 4 is also fixedly connected with one end of an inclined rod 5, a blade 6 is arranged on one side of the central axis of the dust suction barrel 4 on the outer wall of the inclined rod 5, and the blade 6 is used for enabling a dust-carrying air fan which is positioned on one side of the central axis of the dust suction barrel 4 near the inclined rod 5; the middle part cover that the dust inhales a section of thick bamboo 4 is equipped with supporting sleeve 8, and on supporting sleeve 8 was fixed in automobile body 1 through supporting seat 11, seted up in the supporting sleeve 8 and encircled the first ring channel 10 of 8 inside walls of supporting sleeve, a plurality of dust absorption air current via holes 9 have still been seted up on the dust inhales a section of thick bamboo 4 lateral wall of first ring channel 10 position department, first ring channel 10 is linked together with the dust absorption delivery channel 23 of seting up in the supporting sleeve 8 lateral wall, and dust absorption delivery channel 23 is connected with the dust collecting equipment 12 who is fixed in on the automobile body 1 through dust absorption conveyer pipe 13, dust collecting equipment 12 is connected with the power electricity of locating on the automobile body 1 through dust absorption control switch, motor 3 pass through motor control.
Further, the dust suction tube 4 is connected with the supporting sleeve 8 in a sliding and sealing mode through the sealing rubber ring, so that dust cannot leak out along a gap between the dust suction tube 4 and the supporting sleeve 8 when the dust suction tube 4 rotates in the supporting sleeve 8.
Further, the number of the blades 6 is plural, and the blades are distributed along the longitudinal direction of the inclined rod 5, and the area of each blade 6 is reduced from the suspending end of the inclined rod 5 to the end of the inclined rod 5 connected with the dust suction cylinder 4.
Further, the number of the diagonal rods 5 is plural, and the diagonal rods are uniformly distributed along the circumferential direction of the dust suction cylinder 4.
Further, the number of the inclined rods 5 is 3, and each inclined rod 5 is provided with 3 blades 6.
Furthermore, the included angle between the surface of each blade 6 on each inclined rod 5 and the central line of the inclined rod 5 is 30-60 degrees.
Furthermore, each down tube 5 is provided with a plurality of water mist nozzles 7 along the longitudinal direction, the plurality of water mist nozzles 7 are arranged on the outer wall of one side of the down tube 5 opposite to the central axis of the dust suction tube 4, a water delivery channel communicated with each water mist nozzle 7 is arranged in each down tube 5, the water delivery channel is further connected with a water delivery connecting pipe penetrating through the dust suction tube 4, the water delivery connecting pipe is connected with a water passing hole arranged on the side wall of the dust suction tube 4, the water passing hole is communicated with a second annular groove arranged in the supporting sleeve 8 and surrounding the inner side wall of the supporting sleeve 8, the second annular groove is connected with a water delivery device 14 fixed on the vehicle body 1 through a water delivery pipe 15, and the water delivery device 14 is electrically connected with the power supply through a water delivery switch.
Further, the dust suction device 12 comprises a housing, a dust collector 12-1 and a dust storage box 12-2 connected with the dust collector 12-1 are arranged in the housing, wherein the dust collector 12-1 is connected with the dust suction conveying pipe 13, and the dust collector 12-1 is electrically connected with a dust suction control switch; the water delivery device 14 comprises a shell, a high-pressure water pump 14-1 and a water storage tank 14-2 connected with the high-pressure water pump 14-1 are arranged in the shell, the high-pressure water pump 14-1 is connected with the water delivery pipe 15, and the high-pressure water pump 14-1 is electrically connected with a water delivery switch.
Further, the supporting sleeve 8 is fixed with a protective mesh enclosure 17, and the protective mesh enclosure 17 is used for accommodating the inclined rod 5 and a conical track formed by the rotation of the inclined rod 5 around the central axis of the dust suction cylinder 4; the vehicle body 1 is also provided with a dust concentration detection device 21 for detecting the concentration of dust in the air.
Further, a bearing 22 is arranged between the dust suction cylinder 4 and the supporting sleeve 8; the vehicle body 1 is provided with a control panel 16, and the motor control switch, the dust collection control switch and the water delivery switch are all arranged on the control panel 16.
The experimental effect of the invention is as follows: the dust-settling device is compared with a dust-settling device similar to the prior art in terms of dust-settling effect, wherein the working power consumption, the size of a dust-suction bell mouth formed by rotating the inclined rods, the initial concentration of dust in a test environment and the dust-suction time of the dust-settling device are the same as those of the dust-settling device similar to the prior art and provided with the fixed bell mouth as shown in FIG. 2, experiments show that the dust-suction amount (the mass of the sucked dust) of the dust-settling device is 38-53% higher than that of the device of the prior art, the optimal structure of the dust-settling device is that the dust-suction amount is three inclined rods, the optimal number of blades on each inclined rod is 3, and when the number of the inclined rods and the number of blades on each inclined rod are more than 3 or less than 3, the dust-suction effect is reduced than 3. When the dust concentration in the environment is lower, the dust absorption effect of the dust absorption device is obviously higher than that of a dust falling device similar to the prior art, and the dust absorption amount is 53% higher than that of the dust falling device in the prior art in the same test time.
In summary, the dust settling device for tunnel drilling and blasting construction provided by the invention can generate a conical suction inlet through the inclined rod 5 rotating at high speed while the dust suction inlet 4-1 generates suction negative pressure to suck dust-carrying air, and the blade 6 arranged on the inclined rod 5 can also rotate the inclined rod and fan the dust-carrying air near the inclined rod 5 and positioned on one side of the central axis of the dust suction cylinder 4 to the direction of the dust suction inlet 4-1, so that the defect of weak suction negative pressure in the circumferential space inside the conical suction inlet is overcome, and the dust-carrying air outside the inclined rod 5 of the conical suction inlet can also be sucked into the dust suction inlet 4-1; the device can generate more uniform and stronger negative pressure suction at the conical suction inlet, and can greatly improve the dust collection efficiency.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (10)
1. The utility model provides a dust device is used in tunnel drilling and blasting method construction, includes automobile body (1), and automobile body (1) includes driving system (2), is equipped with dust pelletizing system on automobile body (1), its characterized in that, dust pelletizing system is including motor (3) of the locomotive one end of locating automobile body (1), and the output shaft of motor (3) and the right-hand member hub connection that the dust inhales a section of thick bamboo (4), and wherein the left port that the dust inhales a section of thick bamboo (4) is dust sunction inlet (4-1), and the right-hand member mouth that the dust inhales a section of thick bamboo (4) is sealed, and the left end that the dust inhales a section of thick bamboo (4) still is connected with the one end fixed connection of down tube (5) with the left end of down tube (4), lies in dust inhales a section of thick bamboo (4) the central axis one side near down tube (5) on the outer wall and is equipped with blade (6) to dust sunction inlet (4-1) direction with dust air (ii) a A supporting sleeve (8) is sleeved in the middle of the dust suction tube (4), the supporting sleeve (8) is fixed on the vehicle body (1) through a supporting seat (11), a first annular groove (10) surrounding the inner side wall of the supporting sleeve (8) is formed in the supporting sleeve (8), a plurality of dust-absorbing airflow through holes (9) are also formed in the side wall of the dust suction cylinder (4) at the position of the first annular groove (10), the first annular groove (10) is communicated with a dust collection output channel (23) arranged in the side wall of the supporting sleeve (8), the dust collection output channel (23) is connected with dust collection equipment (12) fixed on the vehicle body (1) through a dust collection conveying pipe (13), the dust collection device (12) is electrically connected with a power supply arranged on the vehicle body (1) through a dust collection control switch, and the motor (3) is electrically connected with the power supply through a motor control switch.
2. The dust settling device for tunnel drilling and blasting construction according to claim 1, wherein the dust suction cylinder (4) is connected with the supporting sleeve (8) in a sliding and sealing mode through a sealing rubber ring, so that dust cannot leak out along a gap between the dust suction cylinder (4) and the supporting sleeve (8) when the dust suction cylinder (4) rotates in the supporting sleeve (8).
3. The dust fall device for the tunnel drilling and blasting construction according to claim 1, wherein the number of the blades (6) is multiple and the blades are distributed along the longitudinal direction of the diagonal rod (5), and the area of each blade (6) is reduced from the suspension end of the diagonal rod (5) to the end of the diagonal rod (5) connected with the dust suction barrel (4).
4. The dust fall device for the tunnel drilling and blasting construction according to claim 3, wherein the inclined rods (5) are provided in plurality and are uniformly distributed along the circumferential direction of the dust suction cylinder (4).
5. The dust fall device for the tunnel drilling and blasting construction according to claim 4, wherein the number of the inclined rods (5) is 3, and each inclined rod (5) is provided with 3 blades (6).
6. The dust settling device for the tunnel drilling and blasting construction according to claim 5, wherein an included angle between the plane where the blades (6) are arranged on each inclined rod (5) and the center line of the inclined rod (5) is 30-60 degrees.
7. The dust settling device for tunnel drilling and blasting construction according to claim 4, wherein each inclined rod (5) is provided with a plurality of water mist nozzles (7) along the longitudinal direction thereof, the water spray nozzles (7) are all arranged on the outer wall of one side of the inclined rod (5) opposite to the central axis of the dust suction cylinder (4), and a water delivery channel communicated with each water mist nozzle (7) is arranged in the inclined rod (5), the water delivery channel is also connected with a water delivery connecting pipe penetrating through the dust suction barrel (4), the water delivery connecting pipe is connected with a water passing hole formed in the side wall of the dust suction barrel (4), the water passing hole is communicated with a second annular groove formed in the supporting sleeve (8) and surrounding the inner side wall of the supporting sleeve (8), the second annular groove is connected with water delivery equipment (14) fixed on the vehicle body (1) through a water delivery pipe (15), and the water delivery equipment (14) is electrically connected with the power supply through a water delivery switch.
8. The dust falling device for the tunnel drilling and blasting construction is characterized in that the dust collecting equipment (12) comprises a shell, a dust collector (12-1) and a dust storage box (12-2) connected with the dust collector (12-1) are arranged in the shell, wherein the dust collector (12-1) is connected with the dust collecting conveying pipe (13), and the dust collector (12-1) is electrically connected with a dust collecting control switch; the water delivery device (14) comprises a shell, a high-pressure water pump (14-1) and a water storage tank (14-2) connected with the high-pressure water pump (14-1) are arranged in the shell, the high-pressure water pump (14-1) is connected with the water delivery pipe (15), and the high-pressure water pump (14-1) is electrically connected with a water delivery switch.
9. The dust fall device for the tunnel drilling and blasting construction according to claim 1, wherein the supporting sleeve (8) is fixed with a protective screen (17), and the protective screen (17) is used for accommodating the inclined rod (5) and a conical track formed by the rotation of the inclined rod (5) around the central axis of the dust suction cylinder (4); and the vehicle body (1) is also provided with a dust concentration detection device (21) for detecting the concentration of dust in the air.
10. The dust fall device for the tunnel drilling and blasting construction according to claim 7, wherein a bearing (22) is arranged between the dust suction cylinder (4) and the supporting sleeve (8); the vehicle body (1) is provided with a control panel (16), and the motor control switch, the dust collection control switch and the water delivery switch are all arranged on the control panel (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811341180.4A CN109209471B (en) | 2018-11-12 | 2018-11-12 | Dust device is used in construction of tunnel drilling and blasting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811341180.4A CN109209471B (en) | 2018-11-12 | 2018-11-12 | Dust device is used in construction of tunnel drilling and blasting method |
Publications (2)
| Publication Number | Publication Date |
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| CN109209471A CN109209471A (en) | 2019-01-15 |
| CN109209471B true CN109209471B (en) | 2020-02-07 |
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| CN201811341180.4A Active CN109209471B (en) | 2018-11-12 | 2018-11-12 | Dust device is used in construction of tunnel drilling and blasting method |
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| CN112145221B (en) * | 2020-09-22 | 2022-10-11 | 安徽理工大学 | Mine fog curtain-fan blade combined dust-settling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107281862A (en) * | 2016-03-30 | 2017-10-24 | 中江县泰源建材有限公司 | A kind of dust exhaust apparatus |
| CN107398132A (en) * | 2017-09-08 | 2017-11-28 | 濮阳市鑫盛环保科技有限公司 | Energy-saving central cleaner |
| CN107837036A (en) * | 2017-11-30 | 2018-03-27 | 莱克电气股份有限公司 | Stick vacuums dirt cup filtration system and the stick vacuums using the filtration system |
| CN108180031A (en) * | 2017-12-27 | 2018-06-19 | 郑州格瑞塔电子信息技术有限公司 | A kind of dust suction depositing dust integrated device for mine |
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