WO1997048528A1 - Dispositif de transport de poussiere pour marteau-perforateur du rocher portatif entraine par un moteur a combustion - Google Patents

Dispositif de transport de poussiere pour marteau-perforateur du rocher portatif entraine par un moteur a combustion Download PDF

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Publication number
WO1997048528A1
WO1997048528A1 PCT/SE1997/001077 SE9701077W WO9748528A1 WO 1997048528 A1 WO1997048528 A1 WO 1997048528A1 SE 9701077 W SE9701077 W SE 9701077W WO 9748528 A1 WO9748528 A1 WO 9748528A1
Authority
WO
WIPO (PCT)
Prior art keywords
stone dust
conveying device
dust
collector
ejector
Prior art date
Application number
PCT/SE1997/001077
Other languages
English (en)
Swedish (sv)
Inventor
Gustav Ingmar Johnson
Original Assignee
Gustav Ingmar Johnson
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gustav Ingmar Johnson filed Critical Gustav Ingmar Johnson
Priority to AU32819/97A priority Critical patent/AU3281997A/en
Publication of WO1997048528A1 publication Critical patent/WO1997048528A1/fr

Links

Classifications

    • 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

Definitions

  • Portable combustion motor driven rock drills for hand held operation and typified by the brand names Cobra and Pionjar, are common among professional as well as amateur users of rock drilling equipment.
  • This type of rock drill has so far been marketed without any device for containment or conveying of stone dust generated by the drill. Therefore the operator of the drill would by inevitable inhalation accumulate such dust in his lungs and after prolonged exposure he would be a high risk for developing silicoses.
  • the purpose of this invention would be to prevent the operator from inhaling the dust by means of either a diverting device, where the dust is driven away directly by the flushing air emanating from the tip of the drill, or by a suction device driven either internally by the combustion motor's exhaust gases, or externally by means of a separate. power source. Variations of the invention would have the possibility to be used in combination with a dust separator in the form of e. g. a cyclone.
  • the invention is a dust conveying device to protect the operator from inhaling the stone dust produced in the use of hand held combustion motor driven rock drills, where this device may be in the form of either a diverter, driven internally by means of the ordinary flushing air, emanating from the tip of the drill, or by a special suction device, driven internally by means of the exhaust gases of the rock drill motor, or externally by means of a separate power source.
  • the device in its simplest form is a flushing air driven diverter, functioning in such a way that the flushing air, emanating from the tip of the rock drill, with the purpose of keeping the hole clean from produced stone dust by blowing it straight up out of the drilled hole, now the flushing air carrying the stone dust, instead is trapped by a collector, sealed against the surrounding ambient air and made wholly or partly of a soft pliable material, e. g. rubber, and placed over the drilled hole with air tight sealing against the surrounding rock as well as around the drill rod, so that the stone dust in this way, by means of a relatively short and wide hose, made out of e. g. plastic, is carried from the collector away to the side, instead of being directed straight up toward the face of the operator, which is now the case.
  • a collector sealed against the surrounding ambient air and made wholly or partly of a soft pliable material, e. g. rubber, and placed over the drilled hole with air tight sealing against the surrounding rock as well as around the drill rod, so that
  • this simple type of diverter may be sufficient in many cases when only shallow holes are required, with corresponding minor restrictions to the dust laden flushing air flow, typical in e. g. surveying applications.
  • the flushing air pressure may not suffice to do the work of blowing the hole clean from stone dust, and in addition carry the dust away from the risk zone of the operator by means of the said type of diverter.
  • the flushing air must be supplemented by a coordinated suction device to remove the stone dust.
  • the invention therefore includes an auxiliary ejector type of suction device, suitable for the said type of portable rock drill, and attached via vibration isolation directly to the rock drill body.
  • connection between the motor's exhaust pipe and the ejector is accomplished by means of a heat resistant flexible tubing, preferably of metal, and of relatively short length in order to keep the exhaust gas back pressure at a minimum, which is particularly desirable for the two cycle motor assumed to be used in this case.
  • the exhaust gas jet in the ejector creates the vacuum, that sucks up the stone dust by means of a flexible hose, preferably of plastic or rubber, adapted and attached to the collector located over the drilled hole and according to previous description sealing against the drill and the rock as well, so as to prevent ambient air from leaking in and load down the suction capacity.
  • the mixture of air, exhaust gases and stone dust is transported away by means of a light, non-collapsable hose of e. g. reinforced plastic or rubber, with a diameter corresponding to the outlet of the diffusor. Due to the general requirement of low back pressure for two-cycle combustion engines, this hose, like the exhaust hose, should be kept reasonably short; a length of two or three meters would be considered sufficient to move the dust outside of the operator's immediate danger area.
  • the length of the exhaust pipe can be adapted to the exhaust pulsation frequency to obtain an acoustic resonance in the exhaust pipe with a node of low pressure at the combustion chamber exit for improved scavenging of the two cycle motor cylinder.
  • the exhaust gas driven ejector would mean improvements in the working environment of the operator in these respects, besides the lesser risk for him of contracting silicoses.
  • Figures 1 - 4 show the functional principles of a stone dust conveying device for hand held combustion motor driven rock drills according to this invention.
  • Figure 1 would explain the more important pails of the rock drill 1 , with handle 2 for the operator, the exhaust pipe 3, and the drill rod 4.
  • the invention is shown in its simplest form, a diverter for stone dust, with a collector 5, centrally located over the drilled hole 8, where the collector is equipped with an exit hose 6, and the collector 5 is penetrated by the rock drill rod 4 with airtight sealing around the said rock drill rod, and with the open bottom portion of the collector 5 simultaneously also sealing against the rock 7.
  • Figure 2 shows an ejector 10, driven via a heat resistant flexible tubing 9 by the exhaust gases of the rock drill combustion motor and where a hose 1 1 is used to suck away the stone dust flushed from the drilled hole 8, and then the dust is expelled by means of a larger hose 12, connected to the ejector outlet.
  • FIG. 3 shows the ejector 10, installed on the rock drill by means of an attachment 13 with vibration isolation 14.
  • Figure 4 shows a local dust separator 15, of e. g. cyclone type, for close attachement via a short pipe 16 from the collector 5 above and around the drilled hole 8, and with its exit 17 connected to the ejector 10 via the hose 1 1.
  • a local dust separator 15 of e. g. cyclone type

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Disintegrating Or Milling (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

L'invention concerne un dispositif de transport de la poussière de pierres, générée par le fonctionnement de machines à perforer le rocher, portatives, manuelles et entraînées par un moteur à combustion. Ce dispositif permet de protéger l'opérateur contre toute inhalation de poussières de pierres. Ce dispositif peut avoir la forme d'un dispositif de déviation (figure 1) utilisant l'air d'évacuation ordinaire de la machine, ou peut avoir la forme d'un dispositif d'aspiration spécial (figures 2, 3 et 4) entraîné par les gaz d'échappement du moteur à combustion. Ce dispositif spécial permet de protéger l'opérateur contre tout risque de contracter la silicose en raison de l'exposition à la poussière, et le protège également contre les dangers des gaz d'échappement toxiques, du bruit d'échappement nuisible et contre les risques d'incendie.
PCT/SE1997/001077 1996-06-17 1997-06-17 Dispositif de transport de poussiere pour marteau-perforateur du rocher portatif entraine par un moteur a combustion WO1997048528A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU32819/97A AU3281997A (en) 1996-06-17 1997-06-17 Dust conveying device for portable combustion motor driven rock drills

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9602379-1 1996-06-17
SE9602379A SE506337C2 (sv) 1996-06-17 1996-06-17 Stendammbortförande anordning för handhållna motordrivna bergborrmaskiner

Publications (1)

Publication Number Publication Date
WO1997048528A1 true WO1997048528A1 (fr) 1997-12-24

Family

ID=20403030

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1997/001077 WO1997048528A1 (fr) 1996-06-17 1997-06-17 Dispositif de transport de poussiere pour marteau-perforateur du rocher portatif entraine par un moteur a combustion

Country Status (3)

Country Link
AU (1) AU3281997A (fr)
SE (1) SE506337C2 (fr)
WO (1) WO1997048528A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2868465A1 (fr) * 2004-04-06 2005-10-07 Jean Baptiste Raja Dispositif et procede de forage d'un puits sans dispersion d'effluents parasites
CN104120989A (zh) * 2014-07-16 2014-10-29 平顶山市铁福来机电设备有限公司 一种煤矿冲孔用气渣收集分离装置
CN104120988A (zh) * 2014-07-16 2014-10-29 平顶山市铁福来机电设备有限公司 一种煤矿冲孔用防喷收集装置
CN104453751A (zh) * 2014-12-20 2015-03-25 湖南科技大学 煤巷钻孔施工防突集尘排渣一体化装置
CN109973029A (zh) * 2019-03-25 2019-07-05 焦作千业水泥有限责任公司 一种用于钻机的烟尘处理装置
WO2019144661A1 (fr) * 2018-01-25 2019-08-01 中国矿业大学 Machine de forage minier et dispositif de dépoussiérage pour celle-ci
CN111535736A (zh) * 2020-05-08 2020-08-14 吴锦丁 一种矿山用的凿岩机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1334430A (en) * 1919-04-19 1920-03-23 Phillip J Ayotte Dust-conveyer for drills
US3638737A (en) * 1970-01-13 1972-02-01 David G Moates Pneumatic drill noise muffler and dust removal apparatus
US3946818A (en) * 1973-02-01 1976-03-30 Atlas Copco Aktiebolag Dust controlling device for rock drilling

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1334430A (en) * 1919-04-19 1920-03-23 Phillip J Ayotte Dust-conveyer for drills
US3638737A (en) * 1970-01-13 1972-02-01 David G Moates Pneumatic drill noise muffler and dust removal apparatus
US3946818A (en) * 1973-02-01 1976-03-30 Atlas Copco Aktiebolag Dust controlling device for rock drilling

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2868465A1 (fr) * 2004-04-06 2005-10-07 Jean Baptiste Raja Dispositif et procede de forage d'un puits sans dispersion d'effluents parasites
CN104120989A (zh) * 2014-07-16 2014-10-29 平顶山市铁福来机电设备有限公司 一种煤矿冲孔用气渣收集分离装置
CN104120988A (zh) * 2014-07-16 2014-10-29 平顶山市铁福来机电设备有限公司 一种煤矿冲孔用防喷收集装置
CN104453751A (zh) * 2014-12-20 2015-03-25 湖南科技大学 煤巷钻孔施工防突集尘排渣一体化装置
WO2019144661A1 (fr) * 2018-01-25 2019-08-01 中国矿业大学 Machine de forage minier et dispositif de dépoussiérage pour celle-ci
CN109973029A (zh) * 2019-03-25 2019-07-05 焦作千业水泥有限责任公司 一种用于钻机的烟尘处理装置
CN111535736A (zh) * 2020-05-08 2020-08-14 吴锦丁 一种矿山用的凿岩机

Also Published As

Publication number Publication date
SE9602379L (sv) 1997-12-01
SE506337C2 (sv) 1997-12-01
AU3281997A (en) 1998-01-07
SE9602379D0 (sv) 1996-06-17

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