SE537317C2 - Dust control seal for rock drilling, use of such seal and rock drilling unit including such seal - Google Patents
Dust control seal for rock drilling, use of such seal and rock drilling unit including such seal Download PDFInfo
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- SE537317C2 SE537317C2 SE1350087A SE1350087A SE537317C2 SE 537317 C2 SE537317 C2 SE 537317C2 SE 1350087 A SE1350087 A SE 1350087A SE 1350087 A SE1350087 A SE 1350087A SE 537317 C2 SE537317 C2 SE 537317C2
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- seal
- dust
- opening
- rock drilling
- dust control
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- 239000000428 dust Substances 0.000 title claims abstract description 48
- 239000011435 rock Substances 0.000 title claims abstract description 35
- 238000005553 drilling Methods 0.000 title claims abstract description 29
- 210000002105 tongue Anatomy 0.000 claims abstract description 49
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims description 2
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 2
- 210000004417 patella Anatomy 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000013013 elastic material Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000006069 physical mixture Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920006132 styrene block copolymer Polymers 0.000 description 1
- 229920006345 thermoplastic polyamide Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
SAMMANDRAG Foreliggande uppfinning tillhandahaller en dammkontrollerande tatning (100) , for bergborrning, anvandning av sadan tatning samt bergborrenhet innefattande sadan tatning. Den dammkontrollerande tatningen (100) innefattar en elastisk sammanhangande skivkonstruktion (101) som har avre (102) och nedre (104) ytor och en kant (110) som omger skivkonstruktionen (101), varvid namnda konstruktion (101) innefattar atminstone en genomgaende oppning (106) den Ovre (102) och nedre (104) ytan av den elastiska sammanhangande skivkonstruktionen (101), varvid namnda oppning avgransas av en vagg (108), varvid den dammkontrollerande tatningen (100) vidare innefattar ett fiertal intill varandra liggande .fjadrande tungor (112a-f) dar varje fjadrande taiga (112) avgransas av namnda vagg (108), en forsta sidokant (122), en andra sidokant (124) och en yttre kant (114) samt en ovre och en undre sida (128, 130), varvid namnda flertal fjadrande tungor (112a-e) skjuter ut fran namnda vagg (108), och varvid namnda yttre kanter (114a-e) hos namnda fjadrande tungor (112a-e) tillsammans avgransar en cirkular oppning (116) avpassad for att inrymma stangen (118) hos en bergborr (120),varvid namnda flertal tungor (112) är utformade i ett stycke med namnda elastiska sammanhangande skivkonstruktionen (101). Uppfinningen tillhandahaller ocksa en bergborrenhet innefattande en sadan dammkontrollerande tatning. SUMMARY The present invention provides a dust control seal (100) for rock drilling, the use of such a seal and a rock drilling unit comprising such a seal. The dust control sleeve (100) comprises an elastically continuous disc structure (101) having lower (102) and lower (104) surfaces and an edge (110) surrounding the disc structure (101), said structure (101) comprising at least one through-opening (106) the upper (102) and lower (104) surfaces of the resiliently continuous disc structure (101), said opening being defined by a cradle (108), the dust controlling seal (100) further comprising a plurality of adjacent resilient springs. tongues (112a-f) where each resilient taiga (112) is defined by said cradle (108), a first side edge (122), a second side edge (124) and an outer edge (114) and an upper and a lower side (128 , 130), said plurality of resilient tongues (112a-e) projecting from said cradle (108), and said outer edges (114a-e) of said resilient tongues (112a-e) together defining a circular opening (116) adapted to accommodate the rod (118) of a rock drill (120), said plurality of tongues (112) being formed integrally with said resiliently continuous disc structure (101). The invention also provides a rock drilling unit comprising such a dust control seal.
Description
537 317 borrning. Foljaktligen har denna tatning inte en patagligt langre livslangd och den är dyrare att tillverka. 537 317 drilling. Consequently, this tattoo does not have a ridiculously long lifespan and it is more expensive to manufacture.
GB1428322 beskriver ett tatningsarrangemang bestaende av en ring som har ett antal fjadrande tungor som stracker sig radiellt mat. Tungorna är snedstallda i fOrhallande till planet av den yttre ringen. Foljaktligen finns det en fri luftpassage genom tatningen och saledes en stor risk for att damm kan komma ut genom tatningen och darigenom fororena miljon nara borren. GB1428322 discloses a sealing arrangement consisting of a ring having a number of resilient tongues extending radially. The tongues are inclined in relation to the plane of the outer ring. Consequently, there is a free air passage through the auger and thus a great risk that dust can come out through the auger and thereby contaminate millions near the drill.
Foljaktligen finns det ett behov av en fOrbattrad dammkontrollerande tatning anpassad for anvandning for bergborrning. Consequently, there is a need for an improved dust control seal adapted for use in rock drilling.
Sammanfattning av uppfinningen Foreliggande uppfinning syftar generellt till att eliminera eller atminstone minska de ovan diskuterade problemen saint andra problem som är kanda inom tekniken. Detta gOrs med en dammkontrollerande tatning i enlighet med de bifogade kraven. SUMMARY OF THE INVENTION The present invention generally aims to eliminate or at least reduce the problems discussed above and other problems known in the art. This is done with a dust control sealant in accordance with the appended claims.
I en f6rsta aspekt tillhandahaller uppfinningen en dammkontrollerande tatning for bergborrning innefattande en elastisk sammanhangande skivkonstruktion som har ovre och nedre ytor och en kant som omger skivkonstruktionen, varvid narnnda konstruktion innefattar atminstone en genomgaende oppning den ovre och nedre ytan av den elastiska sammanhangande skivkonstruktionen, varvid namnda oppning avgransas ay en vagg, varvid den dammkontrollerande tatningen vidare innefattar ett flertal fjadrande tungor dar varje fjadrande tunga avgransas av namnda yagg, en forsta sidokant, en andra sidokant och en yttre kant samt en ovre och en undre sida, varvid namnda flertal fjadrande tungor skjuter ut fran namnda vagg, och varvid namnda yttre kanter hos namnda fjadrande tungor tillsammans avgransar en cirkular oppning avpassad far att inrymma stangen hos en bergborr, varvid namnda flertal tungor är utformade i ett stycke med namnda elastiska sammanhangande skivkonstruktionen och de är intill varandra anordnade i forhallande till varandra. In a first aspect, the invention provides a dust control seal for rock drilling comprising an elastically cohesive disk structure having upper and lower surfaces and an edge surrounding the disk structure, said structure comprising at least one through opening the upper and lower surfaces of the resiliently continuous disk structure. opening is defined in a cradle, the dust controlling seal further comprising a plurality of resilient tongues where each resilient tongue is defined by said yagg, a first side edge, a second side edge and an outer edge and an upper and a lower side, said plurality of resilient tongues projecting out from said cradle, and wherein said outer edges of said resilient tongues together define a circular opening adapted to accommodate the rod of a rock drill, said plurality of tongues being formed in one piece with said elastic continuous disc structure and they are adjacent to each other. rdnade in relation to each other.
Sasom beskrivs hari avser termen "dammkontrollerande tatning" en anordning for att forhindra damm Than att komma ut i narheten av borrstangen hos en bergborr. Typiskt sett utgor den dammkontrollerande tatning en del av ett store tatningsarrangemang for att forhindra damm fran att komma ut i miljon nara en bergborrenhet. Dessutom har en sadan tatning typiskt sett utseendet av en cirkular skiva med en centralt anordnad cirkular oppning. 2 537 317 Sasom beskrivs hari avser termen "elastisk sammanhangande skivkonstruktion" en platt konstruktion gjord av ett enda elastiskt material i ett stycke. As described herein, the term "dust control seal" refers to a device for preventing dust than from entering the vicinity of the drill rod of a rock drill. Typically, the dust controlling seal is part of a large seal arrangement to prevent dust from reaching a million near a rock drilling unit. In addition, such a seal typically has the appearance of a circular disc with a centrally located circular opening. 2 537 317 As described herein, the term "elastically cohesive sheet construction" refers to a flat structure made of a single elastic material in one piece.
Sasom beskrivs hari avser uttrycket "ett flertal fjadrande tungor" en grupp av minst tva, men foretradesvis minst fem fjadrande tungor. Tungorna är utformade i ett stycke med resten av skivkonstruktionen och darfor naturligtvis gjorda av samma elastiska material som resten av den elastiska sammanhangande skivkonstruktionen. Sardraget att namnda flertal fjadrande tungor är "intill varandra anordnade i forhallande till varandra" an avsett att betyda att tungorna är sa tatt anordnade i forhallande till varandra att de tillsammans bildar en skivkonstruktion med inget oppet utrymme utom for namnda cirkulara oppning. Nar en lamplig borrstang an inrymd i oppningen, bildas en tat forslutning vilket forhindrar stendamm fran att komma ut in i den nara omgivningen. As described herein, the term "plurality of resilient tongues" refers to a group of at least two, but preferably at least five resilient tongues. The tongues are formed in one piece with the rest of the disc construction and therefore of course made of the same elastic material as the rest of the elastic continuous disc construction. The feature that said plurality of resilient tongues are "arranged next to each other in relation to each other" is intended to mean that the tongues are so arranged in relation to each other that they together form a disc construction with no open space except for said circular opening. When a suitable drill rod is housed in the opening, a tight seal is formed which prevents rock dust from entering the immediate surroundings.
I en foredragen utforingsform finns det spar i nagra av de fjadrande tungorna langs namnda vagg. In a preferred embodiment, there are grooves in some of the resilient tongues along said cradle.
I en annu mera foredragen utforingsform finns det spar i alla de fjadrande tungor pa !Dada sidor langs namnda vagg. In an even more preferred embodiment, there are grooves in all the resilient tongues on the dead sides along the said cradle.
I en f6redragen utf6ringsform tillverkas den elastiska sammanhangande skivkonstruktionen av material vald Than gruppen av polyuretan och termoplastiska elastomerer (TPE). Termoplastiska elastomerer, eller termoplastgummin, är en klass av sampolymerer eller en fysisk blandning av polymerer, som bestar av material med bade termoplastiska och elastomera egenskaper. Typiska och kommersiellt tillgangliga exempel pa TPE-material är styrenblocksampolymerer, polyolefinblandningar, elastiska legeringar (TPE-v eller TPV), termoplastiska polyuretaner, termoplastiska sam polyester och termoplastiska polyamider. For att kvalificera sig som en termoplastisk elastomerer maste ett material ha tre vasentliga egenskaper. De maste kunna strackas till mattliga tojningar och, vid avlagsnande av pafrestningen, kunna atervanda till nagot nara den ursprungliga formen. De maste vara bearbetbara i smalt tillstand vid forhojda temperaturer. Slutligen far de inte ha betydande krypning. In a preferred embodiment, the elastic cohesive sheet construction is made of materials selected from the group of polyurethane and thermoplastic elastomers (TPE). Thermoplastic elastomers, or thermoplastic rubbers, are a class of copolymers or a physical mixture of polymers, which consist of materials with both thermoplastic and elastomeric properties. Typical and commercially available examples of TPE materials are styrene block copolymers, polyolefin blends, elastic alloys (TPE-v or TPV), thermoplastic polyurethanes, thermoplastic polyester and thermoplastic polyamides. To qualify as a thermoplastic elastomer, a material must have three essential properties. They must be able to be stretched to a moderate stretch and, when removing the pafrest, be able to return to something close to the original shape. They must be machinable in the narrow state at elevated temperatures. Finally, they must not have significant creep.
I en foredragen utforingsform ligger tjockleken has den elastiska sammanhangande skivkonstruktionen morn omradet av 10 till 40 mm. In a preferred embodiment, the thickness of the elastically cohesive disc structure is in the range of 10 to 40 mm.
I en foredragen utforingsform har de fjadrande tungorna en tjocklek inom omradet av 1,5 till 4 mm. 3 537 317 I en f6redragen utf6ringsform har sparen hos de fjadrande tungorna ett djup inom omradet av 0,3 till 1,5 mm. In a preferred embodiment, the resilient tongues have a thickness in the range of 1.5 to 4 mm. In a preferred embodiment, the grooves of the resilient tongues have a depth in the range of 0.3 to 1.5 mm.
I en andra aspekt tillhandahaller uppfinningen anvandning av en dammkontrollerande tatning enligt den f6rsta aspekten f6r skyddande av den narmiljOn och maskineriet i en bergborrenhet Than damm som produceras under bergborrning. In a second aspect, the invention provides the use of a dust control seal according to the first aspect for protecting the local environment and machinery in a rock drilling unit Than pond produced during rock drilling.
I en tredje aspekt tillhandahaller uppfinningen en bergborrenhet innefattande en paten inneslutning, en borrstang som har en borrkrona vid en ande och en maskin for rotation av borrstangen, varvid namnda borrkrona och en del av stangen är belagen i namnda partiella inneslutning som är anordnad for tatning av omradet i narheten av borrstangen tillsannmans med berget i vilket ett hal skall borras, varvid namnda inneslutning har en oppning anpassad f6r mottagning av borrstangen, varvid en dammkontrollerande tatning enligt den forsta aspekten av uppfinningen har anordnats i namnda oppning pa ett sadant satt att namnda stang sticker ut genom den cirkulara oppningen hos den dammkontrollerande tatningen, och darigenom f6rhindrar damnn Iran att lacka ut genom oppningen. In a third aspect, the invention provides a rock drilling unit comprising a patented enclosure, a drill rod having a drill bit at one end and a machine for rotating the drill rod, said drill bit and a part of the rod being coated in said partial enclosure arranged for sealing the area near the drill rod is parallel to the rock in which a hall is to be drilled, said enclosure having an opening adapted to receive the drill rod, a dust control seal according to the first aspect of the invention being arranged in said opening in such a way that said rod protrudes out through the circular opening of the dust controlling seal, thereby preventing damn Iran from leaching out through the opening.
Kort beskrivning av ritningarna Foreliggande uppfinning kommer nu att beskrivas med hanvisning till de bifogade figurerna, i vilka: Figur 1 visar en perspektivvy av en dammkontrollerande tatning enligt foreliggande uppfinning, Figur 2 visar ett tvarsnitt av en dammkontrollerande tatning enligt 25 foreliggande uppfinning, Figur 3 visar en vy fran ovan av en fjadrande tunga hos den dammkontrollerande tatningen enligt foreliggande uppfinning, Figur 4 visar en tvarsnittsvy fran sidan av en fjadrande tunga hos den dammkontrollerande tatningen enligt foreliggande uppfinning, Figur 5 beskriver hur ett flertal fjadrande tungor tillsammans definierar en cirkular oppning och bildar en tatning, Figur 6 visar den dammkontrollerande tatningen anordnad i en paten inneslutning och inrymmande en borrstang innefattande en borr, och Figur 7 beskriver en mobil bergborrenhet innefattande en partiell 35 inneslutning innefattande en dammkontrollerande tatning. 4 537 317 Detaljerad beskrivning av uppfinningen FOreliggande uppfinning syftar till att tillhandahalla en fOrbattrad dammkontrollerande tatning som skall anvandas i samband med en bergborrenhet. Tatningen har en 6kad livslangd jamfort med tatningar enligt teknikens standpunkt. Dessutom är den dammkontrollerande tatningen forhallandevis enkel att tillverka. Bada dessa faktorer leder till minskade kostnader f6r slutanvandaren. Brief Description of the Drawings The present invention will now be described with reference to the accompanying figures, in which: Figure 1 shows a perspective view of a dust controlling seal according to the present invention, Figure 2 shows a cross section of a dust controlling seal according to the present invention, Figure 3 shows a top view of a resilient tongue of the dust control seal of the present invention; Figure 4 shows a cross-sectional side view of a resilient tongue of the dust control seal of the present invention. Figure 5 describes how a plurality of resilient tongues together define a circular opening a seal, Figure 6 shows the dust controlling seal disposed in a patented enclosure and housing a drill rod comprising a drill, and Figure 7 describes a mobile rock drilling unit comprising a partial enclosure comprising a dust controlling seal. DETAILED DESCRIPTION OF THE INVENTION The present invention aims to provide an improved dust control seal to be used in conjunction with a rock drilling unit. The sealant has a 6kad lifetime compared to sealants according to the state of the art. In addition, the dust-controlling seal is relatively easy to manufacture. Both of these factors lead to reduced costs for the end user.
Foreliggande uppfinning är baserad pa iden att tillhandahalla en dammkontrollerande tatning dar materialet som utsatts for pafrestning nar borren anvands, dvs. de fjadrande tungorna, ar tillrackligt flexibelt for att inte brytas men anda motstandskraftigt mot att deformeras nar borrkronan tranger igenom den dammkontrollerande tatningen eller nar stangen roteras och fors upp och ner under borrning. Samtidigt nnaste den dammkontrollerande tatningen tillhandahalla ett tillrackligt solitt holje mot stendamm vid borrning. The present invention is based on the idea of providing a dust control seal where the material subjected to stressing when the drill is used, i.e. the resilient tongues are flexible enough not to break but breathe resistant to deformation when the drill bit penetrates the dust controlling seal or when the rod is rotated and moved up and down during drilling. At the same time, the next dust-controlling seal will provide a sufficiently solid casing against rock dust when drilling.
Eftersom stangen hos borren har en mindre diameter an borrkronan kravs det att en oppning hos den dammkontrollerande tatningen, van i skaftet ska inrymmas under borrning, har en mindre diameter an borrkronan. Foljaktligen maste borren tvingas genom den dammkontrollerande tatningen, vilket leder till att en del av den dammkontrollerande tatningen utsatts for mycket pafrestning medan borrkronan tvingas genom. Genom att anvanda fjadrande tungor som organ for att forhindra stendamm Than att tryckas ut ur borrhalet kan den dammkontrollerande tatningen vara taligare mot sadan pafrestning. Since the rod of the drill has a smaller diameter than the drill bit, it is required that an opening of the dust-controlling seal, which is to be accommodated in the shaft during drilling, has a smaller diameter than the drill bit. Consequently, the drill must be forced through the dust-controlling seal, which leads to a part of the dust-controlling seal being subjected to too much stress while the drill bit is forced through. By using resilient tongues as a means of preventing rock dust from being pushed out of the drill tail, the dust controlling seal can be more numerous against such stress.
Vidare, eftersom den dammkontrollerande tatningen maste passa tatt runt stangen under borrning, for att forhindra att stendamm trycks ut ur borrhalet, kan den dammkontrollerande tatningen behova ingripa med stangen under borrning. Anvandning av intill varandra anordnade fjadrande tungor är ett satt att erhalla ett sadan nodvandig tat passform. Furthermore, since the dust control seal must fit around the rod during drilling, to prevent rock dust from being pushed out of the drill tail, the dust control seal may need to engage the rod during drilling. The use of resiliently arranged resilient tongues is a means of obtaining such a necessary fit.
Slutligen, eftersom den dammkontrollerande tatningen enligt foreliggande uppfinning ar utfornnade i ett stycke ar tillverkningsprocessen relativt enkel och okomplicerad. Finally, since the dust control seal of the present invention is integrally formed, the manufacturing process is relatively simple and straightforward.
En sadan dammkontrollerande tatningen 100 visas i figur 1 och 2. Den bestar av ett elastiskt sammanhangande skivkonstruktion 101 med en ovre yta 102 och en undre yta 104. Konstruktionen ar utformad en enda, integrerat stycke. Typiskt ar den elastiska sammanhangande skivkonstruktionen tillverkad av polyuretan eller en termoplastisk elastomer. 537 317 Konstruktionen 101 är omgiven av en kant 110. Kanten visad i figurerna är cirkular men den elastiska sammanhangande skivkonstruktionen 101 kan ha godtycklig form sa lange som den passar med bergborrenheter som skall anvandas. Den dammkontrollerande tatningen har typiskt en definierad tjocklek, t. Tjockleken "t" är typiskt inom omradet av 10 till 40 mm. Varden for "t" under 10 mm kan leda till minskad livslangd. Varden over 40 mm kan leda till minskad elasticitet och mindre bra tatningsegenskaper. Such a dust controlling seal 100 is shown in Figures 1 and 2. It consists of an elastically continuous disc structure 101 with an upper surface 102 and a lower surface 104. The structure is formed in a single, integral piece. Typically, the elastic cohesive sheet construction is made of polyurethane or a thermoplastic elastomer. 537 317 The structure 101 is surrounded by an edge 110. The edge shown in the figures is circular, but the elastic continuous disc structure 101 can have any shape as long as it fits with rock drilling units to be used. The dust controlling seal typically has a defined thickness, t. The thickness "t" is typically in the range of 10 to 40 mm. The value for "t" below 10 mm can lead to reduced service life. The value over 40 mm can lead to reduced elasticity and less good sealing properties.
Det finns en Oppning 106 i den elastiska sammanhangande skivkonstruktionen Than den ovre 102 till den nedre ytan 104. Oppningen avgransas av en vagg 108. Det finns ett flertal fjadrande tungor 112a-e som skjuter ut fran vaggen 108 och de yttre kanterna 114a-e av dessa tungor 112a-e avgransar tillsammans en cirkular oppning. Oppningen är anpassad f6r att inrymma en borrstang. Nar en borr tranger igenom den damnnkontrollerande tatningen 100, bOjs de fjadrande tungor 112a-e vilket Or att borren kan passera. Nar borren har passerat genom den damnnkontrollerande tatningen 100 och är redo att medverka i en borrningsoperation sa bojs de fjadrande tungor 112a-e tillbaka och ytterkanterna 114a-e avgransar pa nytt den cirkulara oppningen 116. There is an opening 106 in the elastically continuous disc structure Than the upper 102 to the lower surface 104. The opening is defined by a cradle 108. There are a plurality of resilient tongues 112a-e projecting from the cradle 108 and the outer edges 114a-e of these tongues 112a-e together define a circular opening. The opening is adapted to accommodate a drill rod. When a drill penetrates the dam-controlling seal 100, the resilient tongues 112a-e bend, allowing the drill to pass. When the drill has passed through the dam controlling seal 100 and is ready to participate in a drilling operation, the resilient tongues 112a-e are bent back and the outer edges 114a-e again delimit the circular opening 116.
Typiskt sett kan de fjadrande tungorna 112a-e innefatta spar 126 intill vaggen 108. I en foredragen utforingsfornn har samtliga fjadrande tungor 112a-e ett sadant spar 126 pa den ovre 128 eller nedre 130 sidan. Syftet med sadana spar är att 6ka flexibiliteten och underlatta genomtrangningen f6r en borrkrona. Typically, the resilient tongues 112a-e may include grooves 126 adjacent the cradle 108. In a preferred embodiment, all resilient tongues 112a-e have such a groove 126 on the upper 128 or lower 130 side. The purpose of such grooves is to increase the flexibility and facilitate the penetration of a drill bit.
Med hanvisning nu till fig. 3, har vane fjadrande tunga 112 en forsta rak sida 122 och en andra rak sida 124. Den yttre kanten 114 är bagformade och avgransar en del av en cirkular 6ppning 116. Vaggen 108 fran vilken den fjadrande tungan sticker ut indikeras ocksa langst ner samt ett spar 126. Referring now to Fig. 3, the habit of resilient tongue 112 has a first straight side 122 and a second straight side 124. The outer edge 114 is bag-shaped and defines a portion of a circular opening 116. The cradle 108 from which the resilient tongue protrudes also indicated at the bottom and a spar 126.
Figur 4 visar en tvarsnittsvy fran sidan av en fjadrande tunga 112. Sasom redan visats i figur 3 skjuter tungan 112 ut fran vaggen 108 och det finns spar 126 intill vaggen 108 pa den ovre 128 och nedre 130 sidan av tungan 112. Djupet "g" f6r sparen 126 anges ocksa i figur 4. Tjockleken pa en fjadrande tunga 112, vilket motsvarar g + tr + g i fig 4, uppgar till 1,5 till 4 mm och är typiskt sett ca 2 mm. Djupet g pa sparen 126 uppgar till 0,3-1,5 mm och är vanligtvis ca 0,5 mm. Figure 4 shows a cross-sectional view from the side of a resilient tongue 112. As already shown in Figure 3, the tongue 112 projects from the cradle 108 and there are grooves 126 adjacent the cradle 108 on the upper 128 and lower 130 side of the tongue 112. The depth "g" for the groove 126 is also indicated in figure 4. The thickness of a resilient tongue 112, which corresponds to g + tr + gi in figure 4, amounts to 1.5 to 4 mm and is typically about 2 mm. The depth of the groove 126 is 0.3-1.5 mm and is usually about 0.5 mm.
Figur 5 visar hur de yttre kanterna 114a-e av de fjadrande tungorna 112a-e i oppningen 106 tillsammans avgransar oppningen 116. Tungorna är anordnade i samma plan och intill varandra pa ett sadant satt att det inte finns 6 537 317 nagot 6ppet utrymme mellan dem forutom vid 6ppningen 116. Nar en borrstang är inrymd i Oppningen 116 pa ett sadant satt att ytterkanterna 114a-e ingriper med namnda stam erhalles en utmarkt tatning. Figure 5 shows how the outer edges 114a-e of the resilient tongues 112a-in the opening 106 together delimit the opening 116. The tongues are arranged in the same plane and next to each other in such a way that there is no open space between them except at the opening 116. When a drill rod is housed in the opening 116 in such a way that the outer edges 114a-e engage with said stem, an excellent seal is obtained.
Figur 6 visar den del av en bergborrenhet, dar en dammkontrollerande tatning 100 ar anordnad i en partiell inneslutning 132. Tatningen 100 inrymmer en borrstang 118 innefattande en borrkrona 119. Borren 119 har trangt genom tatningen 100 och är redo att borra. Figure 6 shows the part of a rock drilling unit where a dust controlling seal 100 is arranged in a partial enclosure 132. The seal 100 houses a drill rod 118 comprising a drill bit 119. The drill 119 has a narrow passage through the seal 100 and is ready to drill.
Figur 7 beskriver en mobil bergborrenhet innefattande en partiell inneslutning 132 inklusive den dammkontrollerande tatningen. Borrkronan 119 langst ut pa borrstangen 118 har borrat ett hal i berget 136. Den partiella inneslutningen och berget 136 definierar tillsammans ett slutet utrymme i narheten av det borrade halet. Stendamm som prod uceras i borrningsprocessen forhindras fran att komma ut fran det slutna utrymmet och fOrorenar narmiljon, inklusive maskineriet 134 hos bergborrenheten. Figure 7 describes a mobile rock drilling unit comprising a partial enclosure 132 including the dust controlling seal. The drill bit 119 furthest out on the drill rod 118 has drilled a hole in the rock 136. The partial enclosure and the rock 136 together define a closed space near the drilled hole. Rock dust produced in the drilling process is prevented from exiting the enclosed space and contaminates close to a million, including the machinery 134 of the rock drilling unit.
Facknnannen inom teknikomradet inser att foreliggande uppfinning pa intet satt är begransad till de ovan beskrivna foredragna utforingsformerna. Tvartom är manga mod ifieringar och variationer mojliga inom ramen for de bifogade patentkraven. Till exempel är den yttre geometrin av den elastiska skivkonstruktionen 101 enbart visad att vara cylindrisk som ett exempel. Those skilled in the art will recognize that the present invention is in no way limited to the preferred embodiments described above. On the contrary, many modifications and variations are possible within the scope of the appended claims. For example, the outer geometry of the elastic disc structure 101 is shown only to be cylindrical as an example.
Andra geometrier, t.ex. en rektangular geometri, är lika mojliga. Other geometries, e.g. a rectangular geometry, are equally possible.
Dessutom kan variationer av de beskrivna utforingsformerna forstas och utf6ras av fackmannen vid utovande av uppfinningen enligt kraven, fran en studie av ritningarna, beskrivningen och de bifogade kraven. I kraven utesluter ordet "innefattande" inte andra element eller steg, och den obestamda artikeln "en" eller "ett" utesluter inte ett flertal. Enbart det faktum att vissa atgarder eller sardrag Merges i inb6rdes olika beroende krav betyder inte att en kombination av dessa atgarder eller sardrag inte kan anvandas med fordel. 7 In addition, variations of the described embodiments may be understood and practiced by those skilled in the art in practicing the invention according to the claims, from a study of the drawings, the description and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plural. The mere fact that certain actions or features of Merges in mutually dependent requirements do not mean that a combination of these features or features cannot be used to advantage. 7
Claims (9)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1350087A SE537317C2 (en) | 2013-01-28 | 2013-01-28 | Dust control seal for rock drilling, use of such seal and rock drilling unit including such seal |
| PCT/SE2013/051488 WO2014116158A1 (en) | 2013-01-28 | 2013-12-11 | Dust controlling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1350087A SE537317C2 (en) | 2013-01-28 | 2013-01-28 | Dust control seal for rock drilling, use of such seal and rock drilling unit including such seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE1350087A1 SE1350087A1 (en) | 2014-07-29 |
| SE537317C2 true SE537317C2 (en) | 2015-04-07 |
Family
ID=51227851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE1350087A SE537317C2 (en) | 2013-01-28 | 2013-01-28 | Dust control seal for rock drilling, use of such seal and rock drilling unit including such seal |
Country Status (2)
| Country | Link |
|---|---|
| SE (1) | SE537317C2 (en) |
| WO (1) | WO2014116158A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437572A (en) * | 2015-10-23 | 2017-02-22 | 鄂托克前旗长城六号矿业有限公司 | Dry drilling opening dust extractor |
| CN109236216A (en) * | 2018-11-05 | 2019-01-18 | 济南力稳岩土工程有限公司 | A kind of down-the-hole drill device for reducing dust, down-the-hole drill and working method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3173502A (en) * | 1960-10-31 | 1965-03-16 | Terry A Overby | Rotating control head |
| SE370106B (en) * | 1973-02-01 | 1974-09-30 | Atlas Copco Ab | |
| US3965998A (en) * | 1974-12-19 | 1976-06-29 | Ingersoll-Rand Company | Dust control hood and dust control system |
| US4321975A (en) * | 1980-06-02 | 1982-03-30 | Dyer Ronald S | Slurry diverter |
| AT367163B (en) * | 1980-10-15 | 1982-06-11 | Ver Edelstahlwerke Ag | COMPRESSED AIR HAMMER |
-
2013
- 2013-01-28 SE SE1350087A patent/SE537317C2/en unknown
- 2013-12-11 WO PCT/SE2013/051488 patent/WO2014116158A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| SE1350087A1 (en) | 2014-07-29 |
| WO2014116158A1 (en) | 2014-07-31 |
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