CN111535761A - Cyclone foam integrated drilling and dust removing device and use method thereof - Google Patents
Cyclone foam integrated drilling and dust removing device and use method thereof Download PDFInfo
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- CN111535761A CN111535761A CN202010297638.1A CN202010297638A CN111535761A CN 111535761 A CN111535761 A CN 111535761A CN 202010297638 A CN202010297638 A CN 202010297638A CN 111535761 A CN111535761 A CN 111535761A
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- 239000000428 dust Substances 0.000 title claims abstract description 324
- 238000005553 drilling Methods 0.000 title claims abstract description 50
- 239000006260 foam Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000007921 spray Substances 0.000 claims abstract description 64
- 230000007246 mechanism Effects 0.000 claims abstract description 56
- 230000003321 amplification Effects 0.000 claims abstract description 32
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 32
- 238000011084 recovery Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 8
- 230000001174 ascending effect Effects 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 230000010354 integration Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 abstract description 3
- 239000003570 air Substances 0.000 description 46
- 239000003245 coal Substances 0.000 description 7
- 238000005187 foaming Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000002817 coal dust Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
- E21B21/015—Means engaging the bore entrance, e.g. hoods for collecting dust
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/07—Arrangements for treating drilling fluids outside the borehole for treating dust-laden gaseous fluids
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/075—Investigating concentration of particle suspensions by optical means
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- Cyclones (AREA)
Abstract
The invention discloses a cyclone foam integrated drilling dust removal device and a using method thereof, and belongs to the technical field of drilling dust removal of mines. The device comprises an orifice dust exhaust unit and a secondary treatment recovery unit, wherein the orifice dust exhaust unit is used for removing large-particle-size dust generated in the drilling process, the secondary treatment recovery unit comprises a gas amplification mechanism, a cyclone dust collector, an atomizing dust collector and a laser dust measurement mechanism, the gas amplification mechanism is positioned on a pipeline connected between the orifice dust exhaust unit and the cyclone dust collector, the cyclone dust collector comprises a container body, the lower half part of the container body is conical, the upper half part of the container body is inverted conical, and airflow subjected to cyclone treatment is discharged through a gas outlet. The invention utilizes the centrifugal and foam dust removal principles to capture dust, utilizes the cyclone dust collector and the spray dust collector to remove dust, utilizes the optical sensor to regulate and control the work of the foam generator, and can realize convenient, intelligent and efficient dust removal.
Description
Technical Field
The invention belongs to the technical field of mine drilling dust removal, and particularly relates to a dust removal device.
Background
In the coal mining process, accidents are reduced by frequently adopting a gas extraction drilling mode, drilling operation is inevitably generated, and in addition, the method also comprises the steps of preventing rock burst from breaking dangerous drill holes, drilling anchor rod supports and the like. A large amount of dust is generated in the drilling operation construction process, the production environment is polluted, the physical and mental health of workers is damaged, the major accident potential of coal dust combustion and explosion is easily formed, and the coal mine production and the life safety of the workers are seriously threatened.
At present, the commonly used dust removal devices have the characteristics of complex structure, operation space pollution, difficult maintenance, low dust removal efficiency and the like. In summary, two types of dust removing devices are mainly adopted in the drilling operation: the first is a dry dust removal device. The dry dust removal device of the drilling machine mainly comprises the following parts: the settling chamber, the dust catching cover, the bag-type dust remover, the ventilator and the like are suitable for drilling of a high-gas outburst coal seam or a soft coal seam. The dry dust removal device does not use water, has good slag discharge at the hole bottom and high hole forming rate, but the later maintenance of the device is relatively difficult, and the secondary pollution of dust is easily caused; the second is a wet dust removal device. The wet dust removal device of the drilling machine mainly comprises the following parts: water supply device, drill way slag discharging device and wind-water mixing device. The advantages of such a dust-catcher can be maximized in relatively wet conditions. The wet dust collector has the defects of poor deslagging condition of hole bottom humidification, difficulty in controlling compressed air and water quantity, non-uniform air-water mixing and the like.
The research reports about dust removing devices in the prior art mainly include:
application number 201710226499.1 discloses a magnetized foam preparation device and a process method for purifying industrial dusty airflow, wherein an alternating magnetic field is generated by electrodes, pressure water in a bent pipeline is oscillated and magnetized to form magnetized water, the magnetized water with pressure forms high-speed jet at the outlet of a jet nozzle of a proportional foaming device, the pressure is reduced to liquid saturated vapor pressure, a low-pressure area is formed at the outlet of a jet throat, outside air is automatically sucked in from a wall opening, a conical net is installed at a diffusion section of the foaming device, high-speed magnetized foam liquid sprayed out from the throat is spread on the conical net, the sucked air continuously blows a blade film to bubble, a large amount of fine magnetized foam is formed, and the magnetized foam is conveyed to an industrial spray tower through a pipeline.
Application number 201821173912.9 discloses a colliery drilling magnetization foam cyclone dust pelletizing system, including falling dust hood, gas and dirt sediment mixture conveyer pipe, whirlwind foam dust collector, play tuber pipe, magnetization foam conveyer pipe, magnetization foam nozzle, foam generator, foaming liquid conveyer pipe, foaming liquid storage tank, inlet tube, air delivery pipe.
The dust removing equipment in the prior art can remove dust, but the dust removing effect needs to be further improved, so that the problem to be solved is urgently needed to research a drilling dust removing device which is simple in structure, high in adaptability, good in dust removing effect and free of polluting the operation space.
Disclosure of Invention
One of the purposes of the invention is to provide a cyclone foam integrated drilling dust removal device which can achieve the purposes of convenient, intelligent and efficient dust removal.
In order to achieve the purpose, the dust collection device mainly utilizes the centrifugal and foam dust collection principles to collect dust, utilizes the cyclone dust collector and the spray dust collector to collect dust, utilizes the optical sensor to regulate and control the work of the foam generator, and can realize convenient, intelligent and efficient dust collection through the mutual cooperation of the dust collection, dust collection and the optical sensor.
In order to achieve the purpose, the invention adopts the following technical scheme:
a cyclone foam integrated drilling dust removal device comprises an orifice dust removal unit and a secondary treatment recovery unit, wherein the orifice dust removal unit is used for removing large-particle-size dust generated in the drilling process, the secondary treatment recovery unit comprises a gas amplification mechanism, a cyclone dust collector, a spray dust collector and a laser dust measurement mechanism, and the cyclone dust collector is connected with the orifice dust removal unit and is used for carrying out secondary treatment on the residual dust in the orifice dust removal unit;
the gas amplification mechanism is positioned on a pipeline connected between the orifice dust exhaust unit and the cyclone dust collector, and compressed air is used as a power source by the amplification mechanism to drive surrounding air to flow to form high-pressure and high-speed airflow;
the cyclone dust collector comprises a container body, the lower half part of the container body is conical, the upper half part of the container body is inverted conical, a dust outlet is formed in the bottom of the container body, a gas outlet is formed in the top of the container body, dust-containing gas flow passing through the amplifying mechanism enters the cyclone dust collector, and gas flow after cyclone processing is discharged through the gas outlet;
the gas outlet is connected with the spray dust collector through a hose, the laser dust measuring mechanism is arranged on the hose, the laser dust measuring mechanism is used for measuring the dust concentration, and the spray dust collector removes dust in a form of spraying foam into dust.
As a preferred scheme of the present invention, the orifice dust exhaust unit comprises a drill rod, a drilling machine, a four-way valve and an air pressure hole packer, the air pressure hole packer is fixed at an orifice of a drilled hole, the front part of the drill rod is connected with the four-way valve, the tail part of the drill rod is connected with the drilling machine, the four-way valve is provided with two transverse outlets and two vertical outlets, the two transverse outlets are respectively connected with the air pressure hole packer and a pipeline connected with the cyclone dust collector, the two vertical outlets are respectively located at the top and the bottom, the vertical outlet located at the bottom is used for discharging large particle size dust, and the vertical outlet located at the top is provided with a brush; the brush extends downwards through the vertical outlet, the brush is wrapped on the outer diameter of the drill rod, and when the drill rod rotates, the brush just sweeps dust on the drill rod.
In another preferred embodiment of the present invention, the gas amplification mechanism includes an air amplifier, compressed air, an air inlet ring, an air outlet ring and a lock nut, and the gas amplification mechanism uses the coanda effect and uses the compressed air as a power source to drive the ambient air to flow to form high-pressure and high-speed air flow.
Further preferably, the laser dust measuring mechanism comprises a microcomputer laser dust meter, a laser transmitter and a light receiver, the microcomputer laser dust meter is arranged at one side close to the cyclone dust collector, the light receiver is arranged at one side close to the spray dust collector, and the laser transmitter is positioned between the microcomputer laser dust meter and the spray dust collector; the light receiver is used for converting the received signal into an electric signal to guide the spray dust collector to act, and the microcomputer laser dust meter is used for measuring the concentration of dust.
Preferably, the wall of the spray dust collector is provided with a plurality of spray outlets, the bottom of the spray dust collector is provided with an outlet, the mixture of the fine dust and the water is discharged through the outlet, and the top of the spray dust collector is connected with a gas drainage device.
Preferably, the brush extends downward through the vertical outlet, and wraps around the outside diameter of the drill pipe, and when the drill pipe rotates, the brush sweeps dust off the drill pipe.
The invention also aims to provide a using method of the cyclone foam integrated drilling dust removal device, which sequentially comprises the following steps:
a. plugging the orifice of the drill hole by using an orifice dust exhaust unit;
b. preparing a gas amplification mechanism, and using compressed air as a power source to drive surrounding air to flow to form high-pressure and high-speed airflow by applying a coanda effect;
c. the airflow passing through the gas amplification mechanism enters a cyclone dust collector for cyclone dust collection, a part of dust is discharged from a dust outlet at the bottom of the cyclone dust collector, and the gas is discharged from a gas outlet at the top of the cyclone dust collector;
d. the gas enters a spray dust collector after passing through a laser dust measuring mechanism;
e. in the spray dust remover, foam nozzles are spirally arranged on the wall of the spray dust remover along the ascending direction of air flow, fine dust is removed in different steps, and a mixture of the fine dust and water is discharged from an outlet at the bottom of the spray dust remover.
Preferably, in the step a, the orifice is fixed by a pneumatic hole sealer, when the drill rod rotates, the brush arranged on the outer diameter of the drill rod just sweeps dust on the drill rod, and the dust with large particle size is discharged from the outlet at the bottom of the four-way valve.
Preferably, in the step c, the airflow passing through the gas amplification mechanism enters the cyclone dust collector and rotates from top to bottom, when the airflow reaches the reflecting screen at the lower half part of the cyclone dust collector, most of the gas forms upward rotating airflow to be discharged, the gas close to the wall of the cyclone dust collector enters the dust hopper from the annular gap between the reflecting screen at the lower half part and the inverted cone at the upper half part, the dusty gas entering the dust hopper is separated from dust, and the purified airflow is discharged upwards from the air holes at the center of the reflecting screen and is discharged from the gas outlet after being converged with the ascending main airflow.
Preferably, in the step d, after the gas passes through a laser transmitter of the laser dust measuring mechanism, light enters a light receiver, the light is shielded due to the change of dust concentration, the light receiver receives a signal and converts the signal into an electric signal to guide the spray dust collector to act, and the dust concentration is monitored by a microcomputer laser dust meter.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a cyclone foam integrated drilling dust removal device, which is based on the premise of coal seam drilling in gas extraction, adopts the principles of centrifugation and foam dust removal to capture dust, seals a drilling hole opening by using a gas pressure hole packer before drilling construction, is connected with a four-way valve of the hole opening and a gas amplification mechanism through a pipeline, and opens a cyclone dust collector and the gas amplification mechanism. After the parts are stabilized, drilling is started. The dust produced during drilling enters the orifice four-way valve, the orifice four-way valve is provided with a brush with an inner hole and the same outer diameter of the drill rod, the larger dust is preliminarily separated, and the large dust falls into the vertical outlet at the bottom. Then through the gas amplification mechanism, because the air pressure hole packer has sealed, the air current that the speed was amplified gets into cyclone through the hose, because this cyclone's unique inverted cone and reflection shield structure, prevented that the return air current from curling up the dust again, improved dust collection efficiency. The arrangement of the cyclone dust collector greatly reduces the dust content of the air flow. The airflow from the cyclone dust collector passes through a laser dust measuring mechanism to enable the foam to react with the spray dust collector, and the foam dust fall can almost capture all dust contacting with the spray dust collector. And gas after dust separation enters a gas drainage pipeline from the gas drainage port to be discharged.
The system is simple, the construction is simple and easy to implement, dust is removed by the cyclone dust collector and the spray dust removal mode, the dust removal efficiency is greatly improved, and the laser emitter and the light receiver are used for regulating and controlling the spray dust collector, so that more intelligent and efficient dust removal is realized.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic structural diagram of a cyclone foam integrated drilling dust removal device of the present invention;
FIG. 2 and FIG. 3 are schematic structural views of a four-way valve according to the present invention;
FIG. 4 is a schematic structural view of a laser dust measuring mechanism and a spray dust collector according to the present invention;
in the figure:
1. the pneumatic hole packer comprises a pneumatic hole packer, 2, a vertical outlet at the bottom, 3, a brush, 4, a four-way valve, 5, a drill rod, 6, a gas amplification mechanism, 7, compressed air, 8, a cyclone dust collector, 9, an outlet at the bottom of a spray dust collector, 10, a laser dust measurement mechanism, 11, a first spray nozzle, 12, a second spray nozzle, 13, a third spray nozzle, 14, a fourth spray nozzle, 15, a mixture of fine dust and water, 61, a laser transmitter, 62 and a light receiver.
Detailed Description
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
The invention discloses a cyclone foam integrated drilling dust removal device and a using method thereof, and in order to make the advantages and technical scheme of the invention clearer and clearer, the invention is described in detail with reference to specific embodiments.
The main difference between the present invention and the prior art is that: the dust is collected by utilizing the centrifugal and foam dust removal principles, and the dust is removed by utilizing a diffusion type tangential flow reversal cyclone dust removal device and a spray dust removal device.
As shown in fig. 1, the cyclone foam integrated drilling dust removal device comprises an orifice dust removal unit and a secondary treatment recovery unit, wherein the orifice dust removal unit is used for removing large-particle-size dust generated in a drilling process, and the secondary treatment recovery unit is used for removing a part of residual dust, which is equivalent to the effect of removing dust through a two-step method.
The orifice dust exhaust unit comprises an air pressure hole packer 1, a four-way valve 4, a brush 3 and a drill rod 6, wherein the air pressure hole packer is fixed at an orifice of a drilled hole, the four-way valve 4 is connected to the front portion of the drill rod, the tail portion of the drill rod is connected with the drilling machine, the four-way valve is provided with two transverse outlets and two vertical outlets, the two transverse outlets are respectively connected with the air pressure hole packer and a pipeline connected with a cyclone dust collector, the two vertical outlets are respectively located at the top and the bottom, a vertical outlet 2 located at the bottom is used for exhausting large-particle-diameter dust, and the vertical outlet located at the. As shown in fig. 2 and 3, the brush extends downwards through the vertical outlet, wraps the outer diameter of the drill rod, and drives the drill rod to rotate when the drilling machine is started, so that the brush located on the periphery of the drill rod rotates along with the drill rod, and the brush can just sweep away dust on the drill rod. Therefore, the preferred brush of the present invention is circular with a circular hole in the middle for the drill rod to pass through, the inside diameter of the circular hole matching the outside diameter of the drill rod. The dust with large particle size is discharged through the orifice dust discharging unit, and the other part of dust enters the secondary treatment recovery unit for further treatment.
The secondary treatment recovery unit comprises a gas amplification mechanism 6, a cyclone dust collector 8, a spray dust collector and a laser dust measurement mechanism 10, wherein the gas amplification mechanism 6 mainly comprises an air amplifier, compressed air 7, an air inlet ring, an air outlet ring and a locking nut, the gas amplification mechanism drives ambient air to flow to form high-pressure and high-speed airflow by using the compressed air as a power source by utilizing the wall attachment effect, one outlet of the four-way valve 4 is connected with the cyclone dust collector 8 through a pipeline, the pipeline is preferably a hose, and the gas amplification mechanism is positioned on the hose.
Cyclone 8, including the vessel, the latter half of vessel is the toper, the first half is the back taper, bottom at the vessel is provided with the dust export, top at the vessel is provided with the gas outlet, the air current through gaseous mechanism of amplification gets into cyclone, from the top do rotary motion, when the reflecting screen of cyclone the latter half is reachd, most gas forms the last whirlwind air current and discharges, the gas near the cyclone wall gets into the ash bucket by the annular gap between the reflecting screen of the latter half and the back taper of the first half, the dirty gas and the dust separation that get into the ash bucket, the air current after the purification is upwards discharged by reflecting screen center bleeder vent, join the back through the gas outlet with ascending main air current and discharge.
As shown in fig. 4, the laser dust measuring mechanism is arranged on a hose connecting the cyclone dust collector and the spray dust collector, the laser dust measuring mechanism comprises a microcomputer laser dust meter, a laser transmitter 61 and a light receiver 62, the microcomputer laser dust meter is arranged at one side close to the cyclone dust collector, the light receiver is arranged at one side close to the spray dust collector, and the laser transmitter is positioned between the microcomputer laser dust meter and the spray dust collector; the light receiver is used for converting the received signal into an electric signal to guide the spray dust collector to act, and the microcomputer laser dust meter is used for measuring the concentration of dust and measuring the concentration of the dust through the laser dust measuring mechanism.
The wall of the spray dust remover is respectively provided with a plurality of spray outlets, such as a first spray outlet 11, a second spray outlet 12, a third spray outlet 13 and a fourth spray outlet 14 which are preferably arranged according to the invention, a mixture 15 of fine dust and water is discharged through an outlet 9 at the bottom of the spray dust remover, and the top of the spray dust remover is connected with a gas drainage device.
The application method of the cyclone foam integrated drilling dust removal device comprises the following specific steps:
the method comprises the following steps of firstly, plugging the hole of a drilled hole by using a hole dust exhaust unit, and specifically comprises the following steps: fixing the orifice by using a pressure hole sealer, wherein when the drill rod rotates, a brush arranged on the outer diameter of the drill rod just sweeps dust on the drill rod, and large-particle-size dust is discharged from an outlet at the bottom of the four-way valve;
secondly, preparing a gas amplification mechanism, and using compressed air as a power source to drive surrounding air to flow to form high-pressure and high-speed airflow by using a coanda effect;
thirdly, the airflow passing through the gas amplification mechanism enters a cyclone dust collector for cyclone dust collection, the airflow passing through the gas amplification mechanism enters the cyclone dust collector and rotates from top to bottom, most of the gas forms upward rotating airflow to be discharged when reaching the reflecting screen at the lower half part of the cyclone dust collector, the gas close to the wall of the cyclone dust collector enters an ash bucket from an annular gap between the reflecting screen at the lower half part and the inverted cone at the upper half part, the dust-containing gas entering the ash bucket is separated from dust, and the purified airflow is discharged upwards from a central air hole of the reflecting screen and is converged with the ascending main airflow and then discharged through a gas outlet;
fourthly, after the gas passes through a laser transmitter of the laser dust measuring mechanism, light enters a light receiver, the light is shielded due to the change of dust concentration, the light receiver receives signals and converts the signals into electric signals to guide the spray dust remover to act, the dust concentration is monitored by a microcomputer laser dust meter, and the gas enters the spray dust remover after passing through the laser dust measuring mechanism;
and fifthly, in the spray dust collector, the foam nozzles are spirally arranged on the wall of the spray dust collector along the ascending direction of the airflow, fine dust is removed in the steps, and the mixture of the fine dust and water is discharged from an outlet at the bottom of the spray dust collector.
The present invention is further illustrated by the following specific examples.
Example 1:
the absolute gas emission quantity of a certain coal and gas outburst mine is 58.85m3A relative gas emission of 32.29 m/min3T is calculated. The mine is developed by adopting a vertical shaft, the single horizontal top and bottom mining is carried out, the elevation of the main shaft mouth is plus 37.5m, the production horizontal elevation is minus 850m, and the mining depth is about 930 m. The maximum gas pressure of the coal bed is 9.2MPa (elevation-973.7 m). The difficulty of gas disaster treatment is high.
The cyclone foam integrated drilling dust removal device specifically comprises the following steps:
step one, placing the air pressure hole packer into a drill hole to start air inflation, wherein the air inflation is based on the condition that the manual operation cannot be directly pressed, an air inflation gas source is an underground compressed air system, and the air inflation pressure is generally 0.2-0.3 MPa. Then connecting the input port of the coal dust processing device with the hole packer through a dust conveying connecting pipeline;
step two, starting the device after opening the water and gas sources, checking the operation condition of coal dust treatment, and starting the drilling machine to drill after idling for 1min when all the components are in normal operation;
thirdly, dedusting by using a cyclone dust collector, and collecting dust concentration data before and after dedusting;
step four, the concentration of the dust before entering the device is 180-200 mg.m-3After entering the four-way hole, dust particles with larger particle size are swept down due to the action of the brush and enter the dust bag; other dust enters the hose, enters the cyclone dust collector after passing through the gas amplification mechanism, the inlet air flow speed is 10-20 m/s, the dust removal efficiency reaches 80%, and the dust concentration obtained by the measurement of the microcomputer laser dust meter is 40-50 mg.m-3(ii) a Then the dust enters a spray dust collector, foam dust fall can almost capture all dust contacting the dust, and the dust concentration after the dust is discharged from the device is 15-16 mg.m-3The dust removal effect of the dust removal device is good.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto.
Although terms such as gas amplification mechanism, cyclone, spray, etc. are used more often herein, the possibility of using other terms is not excluded, and these terms are used only for the purpose of more conveniently describing and explaining the essence of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
It is further understood that the specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a whirlwind foam integration drilling dust collector, its includes drill way dust exhaust unit and secondary treatment recovery unit, drill way dust exhaust unit be used for getting rid of the big particle size dust that produces in the drilling process, its characterized in that:
the secondary treatment recovery unit comprises a gas amplification mechanism, a cyclone dust collector, a spray dust collector and a laser dust measurement mechanism, wherein the cyclone dust collector is connected with the orifice dust discharge unit and is used for carrying out secondary treatment on the residual dust in the orifice dust discharge unit;
the gas amplification mechanism is positioned on a pipeline connected between the orifice dust exhaust unit and the cyclone dust collector, and compressed air is used as a power source by the amplification mechanism to drive surrounding air to flow to form high-pressure and high-speed airflow;
the cyclone dust collector comprises a container body, the lower half part of the container body is conical, the upper half part of the container body is inverted conical, a dust outlet is formed in the bottom of the container body, a gas outlet is formed in the top of the container body, dust-containing gas flow passing through the amplifying mechanism enters the cyclone dust collector, and gas flow after cyclone processing is discharged through the gas outlet;
the gas outlet is connected with the spray dust collector through a hose, the laser dust measuring mechanism is arranged on the hose, the laser dust measuring mechanism is used for measuring the dust concentration, and the spray dust collector removes dust in a form of spraying foam into dust.
2. The cyclone foam integrated drilling dust removal device as claimed in claim 1, wherein: the orifice dust exhaust unit comprises a drill rod, a drilling machine, a four-way valve and an air pressure hole packer, the air pressure hole packer is fixed at an orifice of a drilled hole, the front part of the drill rod is connected with the four-way valve, the tail part of the drill rod is connected with the drilling machine, the four-way valve is provided with two transverse outlets and two vertical outlets, the two transverse outlets are respectively connected with the air pressure hole packer and a pipeline connected with the cyclone dust collector, the two vertical outlets are respectively positioned at the top and the bottom, the vertical outlet positioned at the bottom is used for exhausting large-particle-size dust, and a hairbrush is arranged at the vertical outlet positioned at the top; the brush extends downwards through the vertical outlet, the brush is wrapped on the outer diameter of the drill rod, and when the drill rod rotates, the brush just sweeps dust on the drill rod.
3. The cyclone foam integrated drilling dust removal device as claimed in claim 2, wherein: the gas amplification mechanism comprises an air amplifier, compressed air, an air inlet ring, an air outlet ring and a locking nut, and the gas amplification mechanism drives surrounding air to flow to form high-pressure and high-speed airflow by utilizing a wall attachment effect and taking the compressed air as a power source.
4. The cyclone foam integrated drilling dust removal device as claimed in claim 3, wherein: the laser dust measuring mechanism comprises a microcomputer laser dust instrument, a laser transmitter and a light receiver, the microcomputer laser dust instrument is arranged at one side close to the cyclone dust collector, the light receiver is arranged at one side close to the spray dust collector, and the laser transmitter is positioned between the microcomputer laser dust instrument and the spray dust collector; the light receiver is used for converting the received signal into an electric signal to guide the spray dust collector to act, and the microcomputer laser dust meter is used for measuring the concentration of dust.
5. The cyclone foam integrated drilling dust removal device as claimed in claim 4, wherein: the wall of the spray dust collector is provided with a plurality of spray nozzles, the bottom of the spray dust collector is provided with an outlet, the mixture of the fine dust and water is discharged through the outlet, and the top of the spray dust collector is connected with a gas drainage device.
6. The cyclone foam integrated drilling dust removal device as claimed in claim 2, wherein: the brush extends downwards through the vertical outlet, the brush is wrapped on the outer diameter of the drill rod, and when the drill rod rotates, the brush just sweeps dust on the drill rod.
7. The use method of the cyclone foam integrated drilling dust removal device as claimed in any one of claims 1 to 6, characterized by comprising the following steps in sequence:
a. plugging the orifice of the drill hole by using an orifice dust exhaust unit;
b. preparing a gas amplification mechanism, and using compressed air as a power source to drive surrounding air to flow to form high-pressure and high-speed airflow by applying a coanda effect;
c. the airflow passing through the gas amplification mechanism enters a cyclone dust collector for cyclone dust collection, a part of dust is discharged from a dust outlet at the bottom of the cyclone dust collector, and the gas is discharged from a gas outlet at the top of the cyclone dust collector;
d. the gas enters a spray dust collector after passing through a laser dust measuring mechanism;
e. in the spray dust remover, foam nozzles are spirally arranged on the wall of the spray dust remover along the ascending direction of air flow, fine dust is removed in different steps, and a mixture of the fine dust and water is discharged from an outlet at the bottom of the spray dust remover.
8. The use method of the cyclone foam integrated drilling dust removal device according to claim 7, characterized in that: in the step a, the orifice is fixed by using a pneumatic hole sealer, when the drill rod rotates, the brush arranged on the outer diameter of the drill rod just sweeps dust on the drill rod, and the dust with large particle size is discharged from an outlet at the bottom of the four-way valve.
9. The use method of the cyclone foam integrated drilling dust removal device according to claim 7, characterized in that: and c, enabling the airflow passing through the gas amplification mechanism to enter the cyclone dust collector and rotate from top to bottom, enabling most of the gas to form upward rotating airflow to be discharged when the airflow reaches the reflecting screen at the lower half part of the cyclone dust collector, enabling the gas close to the wall of the cyclone dust collector to enter the dust hopper from an annular gap between the reflecting screen at the lower half part and the inverted cone at the upper half part, separating dust-containing gas and dust entering the dust hopper, enabling the purified airflow to be discharged upwards from a central air hole of the reflecting screen and be discharged through a gas outlet after being merged with the ascending main airflow.
10. The use method of the cyclone foam integrated drilling dust removal device according to claim 7, characterized in that: in the step d, after the gas passes through a laser transmitter of the laser dust measuring mechanism, light enters a light receiver, the light is shielded due to the change of dust concentration, the light receiver receives signals and converts the signals into electric signals to guide the spray dust collector to act, and the dust concentration is monitored by a microcomputer laser dust meter.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010297638.1A CN111535761A (en) | 2020-04-16 | 2020-04-16 | Cyclone foam integrated drilling and dust removing device and use method thereof |
| PCT/CN2020/129933 WO2021208431A1 (en) | 2020-04-16 | 2020-11-19 | Cyclone foam integrated drilling and dust removal device and use method for the device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010297638.1A CN111535761A (en) | 2020-04-16 | 2020-04-16 | Cyclone foam integrated drilling and dust removing device and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111535761A true CN111535761A (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010297638.1A Pending CN111535761A (en) | 2020-04-16 | 2020-04-16 | Cyclone foam integrated drilling and dust removing device and use method thereof |
Country Status (2)
| Country | Link |
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| CN (1) | CN111535761A (en) |
| WO (1) | WO2021208431A1 (en) |
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| WO2021208431A1 (en) * | 2020-04-16 | 2021-10-21 | 湘潭大学 | Cyclone foam integrated drilling and dust removal device and use method for the device |
| CN113685150A (en) * | 2021-09-30 | 2021-11-23 | 太原理工大学 | Dust removal device for underground orifice |
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| CN114165177B (en) * | 2021-12-13 | 2023-06-02 | 西安科技大学 | Low-temperature air composite drilling and orifice negative pressure dust removal system |
| CN115594205B (en) * | 2022-10-17 | 2023-09-19 | 东北大学 | Dust exhausting and heat insulating annular gap device and method for spray pyrolysis furnace |
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| Publication number | Publication date |
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| WO2021208431A1 (en) | 2021-10-21 |
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