CN101963065A - Compressed air slag discharge drilling deduster for use under coal mines - Google Patents
Compressed air slag discharge drilling deduster for use under coal mines Download PDFInfo
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- CN101963065A CN101963065A CN2010105127689A CN201010512768A CN101963065A CN 101963065 A CN101963065 A CN 101963065A CN 2010105127689 A CN2010105127689 A CN 2010105127689A CN 201010512768 A CN201010512768 A CN 201010512768A CN 101963065 A CN101963065 A CN 101963065A
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Abstract
The invention discloses a compressed air slag discharge drilling deduster for use under coal mines, which relates to a ventilating and dedusting device for use under coal mines, and comprises a Venturi tube mixer, wherein the Venturi tube mixer comprises an air inlet chamber, a contracted tube section, a straight tube section and a conical diffusion section, wherein a high-pressure air inlet tube is arranged in the air inlet chamber; the outer end of the high-pressure air inlet tube is arranged outside the air inlet chamber; the inner end of the high-pressure air inlet tube is connected with at least one straight tube which is parallel to the central axis of the Venturi tube mixer; the other end of the straight tube is provided with a high-pressure air nozzle, and the outlet of the high-pressure air nozzle is arranged in the Venturi tube mixer; the high-pressure air inlet tube is also connected with an injector which is connection with a liquid tank through a connecting pipe; and the liquid tank is arranged outside the air inlet chamber. The deduster is made on the basis of a principle of high-pressure air injection, adopts a wet-method dedusting technique, and has a simple structure, small volume, light weight, convenient transportation and high dedusting efficiency.
Description
Technical field
The present invention relates to the device of dust removal by ventilation under the coal mine, be mainly used under the coal mine tunnel wall coal seam dry method boring dedusting, anchor pressure spray process depositing dust, coal conveying belt transfer point, refer in particular to a kind of underground mine use deslagging boring deduster of calming the anger.
Background technology
Because gas threatens the safety of coal mining, the gas under the coal mine in the tunnel wall boring pump drainage coal seam becomes one important step before the coal mining.To some weak seams, can only dry method hole, adopt compressed air drifting dust technology, the coal dust and the compressed air that produce when making boring spray along the gap between drilling rod and the hole wall together.Though the drifting dust gas flow is little, the energy that compressed air has is big, and the gas shock power of formation is strong, and the band dust quantity is up to 3000mg/m
3More than, cause the environment of work plane very abominable, the serious threat operating personnel's is healthy; The gas density height of ejection air-flow, because of the height safety in production needs, the dust-removing method of drifting dust technology is forbidden exhaust fan.
In order to improve the serious problem of environmental pollution in the dry method boring, present way is the aperture dust arrester that the drilling rod sleeve pipe is set in the aperture of dry method boring, small casing gos deep into the coal seam, big sleeve pipe is pressed close to the tunnel wall, compressed-air actuated drifting dust enters big sleeve pipe along the ejection of the gap between drilling rod and the small casing, and at big sleeve pipe internal spraying depositing dust, efficiency of dust collection is between 50%～60%, though dust-laying effect is obvious, be difficult to reach working envrionment sanitary standard.At present, the aperture dedusting also has the process equipment of other form, as multi-stage non-powered orifice dust remover (200920032546.X), mining wet type orifice dust catcher (200620110816.0), but because equipment volume is big, remove fast, dress and difficult, be difficult to adapt to the frequent demand of changing of bore position.
Fast development along with national economy, the demand of coal is increasing, the safe coal exploitation is more and more paid attention to, and tunnel wall boring pump drainage gas has become one of important measures that gas is given prominence in the prevention coal mining, so the boring workload in wall coal seam is increasing.In order to eliminate in the dry method boring procedure dust to the threat of operating worker, the development volume is little, in light weight, safe and reliable, remove and adorn easily that the high-effective dust-removing device has important practical value, it can improve the working environment of work plane, reduce the labour intensity of operating worker, ensure the working interest of operating worker, simultaneously, can improve the operating efficiency of wall boring.
Summary of the invention
The objective of the invention is in order to overcome the deficiencies in the prior art, a kind of underground mine use deslagging boring deduster of calming the anger is provided, deduster has adopted gases at high pressure injection principle, wet dedusting technology, and it is simple in structure, volume is little, in light weight, convenient in carrying and efficiency of dust collection height.
The object of the present invention is achieved like this: a kind of underground mine use deslagging boring deduster of calming the anger, comprise Venturi tube mixer, described Venturi tube mixer comprises inlet plenum, shrink pipeline section, straight length and taper diffuser, in described inlet plenum, be provided with the gases at high pressure inlet tube, the outer end of gases at high pressure inlet tube is arranged on outside the inlet plenum, the inner of gases at high pressure inlet tube connects at least one straight tube parallel with the Venturi tube mixer central axis, the other end of straight tube is equipped with the gases at high pressure shower nozzle, and the exit of gases at high pressure shower nozzle is arranged in the Venturi tube mixer; Also connect injector on the described gases at high pressure inlet tube, described injector connects liquid reserve tank by tube connector, and liquid reserve tank is arranged on outside the inlet plenum.
The present invention is provided with inlet plenum before the contraction pipeline section of Venturi tube mixer, the gases at high pressure shower nozzle is arranged in the Venturi tube mixer, the high velocity air that the gases at high pressure shower nozzle sprays passes through Venturi tube mixer, inlet plenum at Venturi tube mixer forms negative pressure, the dust-contained airflow that suction is entered by air inlet pipe; When gases at high pressure pass through injector, produce ejector action, water in the suction liquid reserve tank, form air-water mixture, be ejected in the dust-contained airflow, water is atomized into droplet, droplet is dispersed in the dust-contained airflow, enter the straight length and the taper diffuser of Venturi tube with dust-contained airflow, form wet dedusting, that is: the dust-contained airflow of the high velocity air of injection and suction, form the high turbulence state in the flow process of droplet in Venturi tube mixer, created continuous the contact with droplet for grit, the chance of collision, cause grit and captured the dedusting of the formation first order by droplet.
Underground mine use is calmed the anger, and to adopt compressed air be working fluid to deslagging boring deduster, and when the pressure of compressed air source surpassed 0.19MPa, the air velocity that the gases at high pressure shower nozzle sprays was velocity of sound or supersonic speed, and the injection effect of generation is better; In order to improve the operating efficiency of working fluid, be single sprinkler design many shower nozzles, can increase substantially injection than (driving fluid quality/working fluid quality).
Advantage of the present invention is:
(1) adopt the gases at high pressure injection, the deduster movement-less part, environment for use is not subjected to the restriction of gas density;
(2) deduster is simple in structure, and weight is no more than 50kg, carries, removes, adorns conveniently;
(3) efficiency of dust collection of deduster is not less than 95%, and correct the use the deduster blockage problem can not occur.
Be arranged on the contraction pipeline section in the exit of described gases at high pressure shower nozzle.
Exit at described gases at high pressure shower nozzle is arranged on straight length.
In order to make dust removing effects better, the outer end of described taper diffuser connects the dedusting dewater unit.The mixed airflow that Venturi tube mixer is discharged forms second level dedusting by the dedusting dewater unit.
Described dedusting dewater unit comprises horizontal cylinder and the fiber screen that is arranged on the horizontal cylinder cross section, the fixedly connected baffle plate in the rear end of described cylindrical shell, air flow stream exported after the lower end of cylindrical shell was provided with dust-containing water flow export and dedusting, described dust-containing water flow export is arranged on the front side of fiber screen, the air flow stream outlet is arranged on the rear side of fiber screen after the dedusting, is provided with between the rear end face of the front end face of fiber screen and described taper diffuser at interval.Wet fibril on the fiber grid and dust produce inertial collision effect and interception effect, and the dustproof dehydrating effect of secondary is good.
Between described gases at high pressure inlet tube and the straight tube gases at high pressure distributor chamber is set, the gases at high pressure distributor chamber is positioned at described inlet plenum, and described each straight tube is arranged in an end of gases at high pressure distributor chamber.
The upper end of described inlet plenum connects dust-contained airflow inlet tube, the axis of dust-contained airflow inlet tube and the axis normal of Venturi tube mixer.
Described inlet plenum connects dust-contained airflow inlet tube, the axis of dust-contained airflow inlet tube and the dead in line of Venturi tube mixer.
In order to prevent that air-flow from spraying shower nozzle and stopping up, first filter screen is set in the gases at high pressure inlet tube.
For making things convenient for deslagging, slag tap is installed in the lower end of inlet plenum.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is second kind of structural representation of the present invention.
Fig. 3 is the reference figure of use occasion of the present invention.
The specific embodiment
Embodiment 1
As shown in Figure 1, for a kind of underground mine use deslagging boring deduster of calming the anger, comprise Venturi tube mixer 10, Venturi tube mixer 10 comprises inlet plenum 10-1, shrinks pipeline section 10-2, straight length 10-3 and taper diffuser 10-4.In inlet plenum 10-1, be provided with gases at high pressure inlet tube 1, the outer end of gases at high pressure inlet tube 1 is arranged on outside the inlet plenum 10-1, the inner of gases at high pressure inlet tube 1 connects two straight tubes 14 parallel with Venturi tube mixer 10 central axis, the other end of straight tube 14 is equipped with gases at high pressure shower nozzle 13, and the exit of gases at high pressure shower nozzle 13 is arranged on shrinks pipeline section 10-2.
Also connect injector 15 on the gases at high pressure inlet tube 1, injector 15 connects liquid reserve tank 17 by tube connector 32, adds blowing agent, size in the water of liquid reserve tank 17, and to improve the ability of water capture grit in the air-flow, liquid reserve tank 17 is arranged on outside the inlet plenum 10-1.
The outer end of taper diffuser 10-4 connects horizontal cylinder 28, the fiber screen 11 that on horizontal cylinder 28 cross sections, is provided with, the fixedly connected baffle plate 33 in the rear end of cylindrical shell 28, air flow stream exported 30 after the lower end of cylindrical shell 28 was provided with dust-containing water flow export 29 and dedusting, dust-containing water flow export 29 is arranged on the front side of fiber screen 11, air flow stream outlet 30 is arranged on the rear side of fiber screen 11 after the dedusting, is provided with between the rear end face of the front end face of fiber screen 11 and taper diffuser 10-4 at interval.Fiber screen 11 can be replaced with eddy flow plate, folded sheet or packing layer.
Embodiment 2
As shown in Figure 2, between gases at high pressure inlet tube 1 and the straight tube 14 gases at high pressure distributor chamber 4 is set, gases at high pressure distributor chamber 4 is arranged in the inlet plenum 10-1, and each straight tube 14 is arranged in an end of gases at high pressure distributor chamber 4.The upper end of inlet plenum 10-1 connects dust-contained airflow inlet tube 8, the axis normal of the axis of dust-contained airflow inlet tube 8 and Venturi tube mixer 10.First filter screen 3 is set in the gases at high pressure inlet tube 1.The lower end of inlet plenum 10-1 connects slag tap 16.All the other structures are with embodiment 1.
Gases at high pressure 2 enter gases at high pressure distributor chamber 4 by gases at high pressure inlet tube 1, pass through straight tube 14 then, and gases at high pressure spray by gases at high pressure shower nozzle 13, produce high velocity air; The high velocity air that sprays produces ejector action, in the inlet plenum formation negative pressure of Venturi tube mixer 10, aspirates the dust-contained airflow 7 that guides and come; Simultaneously, when gases at high pressure 2 pass through injector 15, produce ejector action, the water in the suction liquid reserve tank 17 forms air-water mixture, is ejected in the dust-contained airflow, and water is atomized into droplet, and the atomizing droplet is evenly respectively in dust-contained airflow; Because the ejector action of high velocity air, the droplet of atomizing enters the straight length of Venturi tube mixer 10 with dust-contained airflow 7 and high velocity air, because the diffusion of high velocity air and entrainment effect, the straight length of Venturi tube mixer 10 and the air-flow in the diffuser are in the turbulent condition of height, grit and droplet have been created and have constantly been contacted, collision, grit is caused dirt to be captured by droplet by water-wet and weightening finish, constitutes wet dedusting; Cross fiber screen 11 by the air communication that Venturi tube mixer is discharged, the slit is left in fiber screen 11 lower ends and anemostat outlet lower end, is convenient to the outflow of dust-containing water, prevents to stop up, and dust-containing water flows out from dust-containing water flow export 29; Because discharge gas shock fiber screen, and the gap is less between the fiber grid silk, the fiber grid silk of band moisture film bumps to the grit of not removing in the air-flow and tackles, and forms final dusting, and air-flow carries out partial dehydration.Air-flow 12 after the dedusting is air flow stream outlet 30 discharging downwards after the dedusting.
As shown in Figure 3, compressed air enters bit location by hollow drill 22, carries ickings secretly, and ejects from gap between drilling rod 22 and aperture dust arrester 21 sleeve pipes, and the dust-contained airflow of formation enters in the cavity of aperture dust arrester 21; When compressed-air hose 24 and underground mine use are calmed the anger deslagging boring deduster 18 when being connected, the underground mine use negative pressure that deslagging boring deduster 18 air inlet ports form of calming the anger, by the dust-contained airflow in the negative pressure air duct 23 suction orifice dust arresters 21, oarse-grained ickings is discharged by the slag-drip opening of aperture dust arrester 21, fall into undergroundly, the floating dust of small particle diameter is taken away; When high-pressure water hose 25 and underground mine use are calmed the anger deslagging boring deduster 18 when being communicated with, the underground mine use deslagging boring deduster 18 of calming the anger has dedusting function, and deduster begins dedusting work, be sucked and small size particle in deduster, remove.Because the intake-gas flow greater than the ejection air flow rate of carrying ickings secretly, the dirt phenomenon can not occur emitting in aperture dust arrester 21.Among Fig. 3,19 is the coal seam, and 20 is the tunnel wall, 24 compressed-air hoses, and 25 is high-pressure water hose, and 26 is the tunnel high-pressure air tube, and 27 is the tunnel high-pressure water pipe.
The underground mine use that is applicable to the aperture dedusting deslagging boring deduster basic parameter of calming the anger:
1. be suitable for the compressed air pressure of injection: 〉=0.2MPa;
2. injection is than (injection gaseous mass/compressed air quality): 10～15;
3. be suitable for spraying pressure of supply water: 〉=0.3MPa;
4. liquid-gas ratio: 0.08～0.10L/m
3
5. applied powder dust concentration scope: 0～30000mg/m
3
6. efficiency of dust collection: 〉=95%;
7. deduster weight:＜50kg.
Claims (10)
1. the underground mine use deslagging boring deduster of calming the anger, comprise Venturi tube mixer, described Venturi tube mixer comprises inlet plenum, shrinks pipeline section, straight length and taper diffuser, it is characterized in that: in described inlet plenum, be provided with the gases at high pressure inlet tube, the outer end of gases at high pressure inlet tube is arranged on outside the inlet plenum, the inner of gases at high pressure inlet tube connects at least one straight tube parallel with the Venturi tube mixer central axis, the other end of straight tube is equipped with the gases at high pressure shower nozzle, and the exit of gases at high pressure shower nozzle is arranged in the Venturi tube mixer; Also connect injector on the described gases at high pressure inlet tube, described injector connects liquid reserve tank by tube connector, and liquid reserve tank is arranged on outside the inlet plenum.
2. the underground mine use according to claim 1 deslagging boring deduster of calming the anger is characterized in that: be arranged on the contraction pipeline section in the exit of described gases at high pressure shower nozzle.
3. the underground mine use according to claim 1 deslagging boring deduster of calming the anger, it is characterized in that: the exit at described gases at high pressure shower nozzle is arranged on straight length.
4. the underground mine use according to claim 1 deslagging boring deduster of calming the anger, it is characterized in that: the outer end of described taper diffuser connects the dedusting dewater unit.
5. the underground mine use according to claim 4 deslagging boring deduster of calming the anger, it is characterized in that: described dedusting dewater unit comprises horizontal cylinder and the fiber screen that is arranged on the horizontal cylinder cross section, the fixedly connected baffle plate in the rear end of described cylindrical shell, air flow stream exported after the lower end of cylindrical shell was provided with dust-containing water flow export and dedusting, was provided with between the rear end face of the front end face of fiber screen and described taper diffuser at interval.
6. the underground mine use according to claim 1 deslagging boring deduster of calming the anger, it is characterized in that: between described gases at high pressure inlet tube and the straight tube gases at high pressure distributor chamber is set, the gases at high pressure distributor chamber is positioned at described inlet plenum, and described each straight tube is arranged in an end of gases at high pressure distributor chamber.
7. the underground mine use according to claim 1 deslagging boring deduster of calming the anger, it is characterized in that: the upper end of described inlet plenum connects dust-contained airflow inlet tube, the axis of dust-contained airflow inlet tube and the axis normal of Venturi tube mixer.
8. the underground mine use according to claim 1 deslagging boring deduster of calming the anger, it is characterized in that: described inlet plenum connects dust-contained airflow inlet tube, the axis of dust-contained airflow inlet tube and the dead in line of Venturi tube mixer.
9. the underground mine use according to claim 1 deslagging boring deduster of calming the anger is characterized in that: in the described gases at high pressure inlet tube first filter screen is set.
10. the underground mine use according to claim 1 deslagging boring deduster of calming the anger, it is characterized in that: slag tap is installed in the lower end of described inlet plenum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105127689A CN101963065A (en) | 2010-10-20 | 2010-10-20 | Compressed air slag discharge drilling deduster for use under coal mines |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105127689A CN101963065A (en) | 2010-10-20 | 2010-10-20 | Compressed air slag discharge drilling deduster for use under coal mines |
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| CN101963065A true CN101963065A (en) | 2011-02-02 |
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| CN2010105127689A Pending CN101963065A (en) | 2010-10-20 | 2010-10-20 | Compressed air slag discharge drilling deduster for use under coal mines |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174896A (en) * | 2011-03-11 | 2011-09-07 | 芦彦山 | Dust remover for drilling holes |
| CN102425445A (en) * | 2011-10-10 | 2012-04-25 | 中煤第五建设有限公司第三十一工程处 | Negative-pressure guniting dust collector |
| CN102587956A (en) * | 2012-01-09 | 2012-07-18 | 河南理工大学 | Downhole parallel jet dust removal system |
| CN108211757A (en) * | 2018-03-19 | 2018-06-29 | 西安科技大学 | A kind of mining negative-pressure ejecting formula hydrogen sulphide disposal unit and processing method |
| CN108760409A (en) * | 2018-03-27 | 2018-11-06 | 重庆山楂树科技有限公司 | A kind of gas sampling assembly |
| CN111878153A (en) * | 2020-05-12 | 2020-11-03 | 大连亿斯德特种智能装备有限公司 | Coal mine dust removal system and dust removal method |
| WO2023193121A1 (en) * | 2022-04-04 | 2023-10-12 | Guzman Madariaga Marcos Augusto | Suction system for powders and fine particles |
-
2010
- 2010-10-20 CN CN2010105127689A patent/CN101963065A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174896A (en) * | 2011-03-11 | 2011-09-07 | 芦彦山 | Dust remover for drilling holes |
| CN102425445A (en) * | 2011-10-10 | 2012-04-25 | 中煤第五建设有限公司第三十一工程处 | Negative-pressure guniting dust collector |
| CN102587956A (en) * | 2012-01-09 | 2012-07-18 | 河南理工大学 | Downhole parallel jet dust removal system |
| CN108211757A (en) * | 2018-03-19 | 2018-06-29 | 西安科技大学 | A kind of mining negative-pressure ejecting formula hydrogen sulphide disposal unit and processing method |
| CN108760409A (en) * | 2018-03-27 | 2018-11-06 | 重庆山楂树科技有限公司 | A kind of gas sampling assembly |
| CN111878153A (en) * | 2020-05-12 | 2020-11-03 | 大连亿斯德特种智能装备有限公司 | Coal mine dust removal system and dust removal method |
| CN111878153B (en) * | 2020-05-12 | 2022-06-07 | 大连亿斯德特种智能装备有限公司 | Coal mine dust removal system and dust removal method |
| WO2023193121A1 (en) * | 2022-04-04 | 2023-10-12 | Guzman Madariaga Marcos Augusto | Suction system for powders and fine particles |
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Application publication date: 20110202 |