EP3741473B1 - Borehole cleaning device, method and assembly - Google Patents
Borehole cleaning device, method and assembly Download PDFInfo
- Publication number
- EP3741473B1 EP3741473B1 EP20171562.0A EP20171562A EP3741473B1 EP 3741473 B1 EP3741473 B1 EP 3741473B1 EP 20171562 A EP20171562 A EP 20171562A EP 3741473 B1 EP3741473 B1 EP 3741473B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- borehole
- suction nozzle
- nozzle
- drilling dust
- blowing nozzle
- Prior art date
- Legal status (The legal status 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 status listed.)
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- 238000004140 cleaning Methods 0.000 title claims description 30
- 238000000034 method Methods 0.000 title claims description 12
- 239000000428 dust Substances 0.000 claims description 74
- 238000005553 drilling Methods 0.000 claims description 61
- 238000007664 blowing Methods 0.000 claims description 54
- 239000000203 mixture Substances 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 239000003570 air Substances 0.000 description 53
- 238000011161 development Methods 0.000 description 13
- 230000018109 developmental process Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 5
- 239000011449 brick Substances 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
- B28D7/02—Accessories specially adapted for use with machines or devices of the preceding groups for removing or laying dust, e.g. by spraying liquids; for cooling work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/021—Cleaning pipe ends or pipe fittings, e.g. before soldering
Definitions
- the invention relates to a device for cleaning a borehole and a method for cleaning a borehole using the device and an arrangement with the device according to the invention and a borehole in an object.
- the document DE 20 2010 010 848 U1 shows an automatic drill with a drill dust removal unit, drill dust that occurs being sucked off by means of the drill dust removal unit or blown out or flushed out in the case of shallow boreholes.
- the German Offenlegungsschrift DE 10 2016 225 015 A1 relates to a method for removing drilling dust.
- a hand-held power tool with a drilling tool has a blower with which air can be blown out and air can be sucked in.
- the drilling tool has a longitudinal recess through which air is blown into a borehole formed with the drilling tool, even while the drilling tool is rotating. Drilling dust is thereby blown out of the drill hole.
- the drilling tool is surrounded by a sleeve from which drill dust is extracted.
- a dust collector can be provided.
- a borehole cleaning device is known.
- the borehole cleaning device is either connected to a vacuum cleaner or connected to a hand pump.
- a blast of air is generated with the hand pump, which is fed into the borehole via a blow-off line.
- the air blown out stirs up the dust and flows into the filter bag together with the air that has been deflected by 180°.
- the blow-out device can be connected to a vacuum cleaner.
- the exhaust line is then open to the environment. The suction effect of the vacuum cleaner sucks air into the drill hole via the exhaust line, which then takes the drilling dust with it and is sucked into the vacuum cleaner.
- a device for cleaning boreholes is known.
- the device has a rotatable brush with which the wall of a borehole can be brushed. Compressed air exits through a shaft of the rotatable brush. A collar surrounds the borehole and the shaft of the brush at the surface. The dust escaping from the borehole is sucked out of the sleeve.
- the device includes a suction line that is fitted with a flexible sleeve over a surface surrounding the bore.
- a compressed air line extends a little way into the bore, blows out compressed air and thereby stirs up drilling dust in the bore, which is then sucked off via the suction line.
- the device has a blow insert that is inserted into the threaded bore.
- the blower insert has a longitudinal slit from which air or a cleaning medium impinges on the threads of the threaded bore with a twist in a tangential direction.
- the threaded hole is surrounded by a sleeve through which the compressed air or cleaning medium escaping from the hole is discharged.
- a cleaning device for kiln cars has a discharge nozzle and a suction nozzle, wherein Air coming from the outlet nozzle and dust thrown up is taken up by means of the suction nozzle.
- the device has a blow-out nozzle and a suction nozzle adjacent to the blow-out nozzle.
- the invention is based on the object of creating a device, a method and an arrangement by means of which borehole cleaning is improved.
- a device for cleaning boreholes according to claim 1 and a method for cleaning a borehole by means of the device according to claim 11 and an arrangement with a borehole in an object and the device according to claim 15 are provided according to the invention.
- Advantageous developments of the invention are specified in dependent claims 2 to 10 and 12 to 14.
- the attachment of the dowel systems can be relevant for approval.
- Approval-relevant in this context means that the anchor system - consisting of anchor, screw/nut/substructure (standardized concrete, brick and the like) - and also the production and cleaning of a drill hole are precisely documented.
- the setting of the anchor including the creation of the drill hole and the cleaning of the drill hole, must be carried out in the order and to the extent described in the regulation. Only then can the required safety for people and the environment be achieved through correctly fastened components, such as self-supporting balconies made of metal structures, given.
- a gas for example air, can be forced into the well under pressure to clean the well.
- the invention prevents the dust from escaping from the borehole, both into the environment and onto the operator during the conventional borehole cleaning process.
- a borehole can be cleaned much more effectively with the device according to the invention, with a hand-operated pump, for example, with significantly fewer pumping movements than with conventional devices and with electrically operated pumps significantly faster than with known devices.
- Contamination of the construction site, pollution of the environment by dust and also exposure of an operator to dust escaping from the borehole can be avoided completely or at least almost completely by means of the invention.
- the simplification for the operator ensures that he actually cleans the borehole and does not just do it half-heartedly or not at all. This completely avoids the risk for the operator of being held liable in the event of a claim.
- the device according to the invention By blowing air into the borehole using the blowing nozzle with the device according to the invention, in order to whirl up the drilling dust in the borehole, and at the same time air is sucked out of the borehole and fed back to the pump via a filter, a closed circuit or almost closed circuit is created Circuit provided for the air. This can prevent drilling dust from escaping into the environment.
- the borehole can be cleaned much more thoroughly than is the case with conventional devices.
- the borehole is either exclusively blown out, for example by blowing in compressed air, or the borehole is exclusively sucked out, for example by applying a vacuum cleaner.
- the device according to the invention combines blowing air into the well and sucking air out of the well. This means that cleaning can be carried out particularly thoroughly and efficiently at the same time.
- the device is made of light-weight material, such as plastic, so that the weight of the device is low and handling is facilitated.
- the device is preferably dimensioned in such a way that it is suitable for manual operation.
- the pump may be manual, electric, hydraulic or pneumatic, the pump being operable continuously or intermittently. Unless it's a Configuration of the device is, in which the pump requires electricity, a battery or an accumulator can be provided or it can be provided a mains operation via a power cable.
- the pump is a double-stroke pump, in which air is sucked in and blown out simultaneously in one stroke, or an electric pump.
- boreholes are to be understood as meaning holes that are to be provided with dowels, especially plastic dowels and chemical dowels, for example two-component mortar. Such holes are drilled, for example, in concrete or brick.
- the boreholes are usually designed as blind holes in which drill dust collects during drilling. The drilling dust can be removed from the boreholes at least to the extent that components can be fixed correctly and with a corresponding level of security using the device according to the invention. In particular, with the device according to the invention, approval regulations can be reliably met when setting anchors.
- the filter element is based on a sieve effect, a mass inertia effect, an interception effect or a diffusion effect, so that the drilling dust can be extracted from an air flow circulating through the device.
- Drilling dust or other preferably loose materials with a small particle size, in particular a particle size of less than 50 ⁇ m, can be removed from boreholes using the device in a particularly advantageous manner without the drilling dust or other, for example loose, materials being released into an environment outside of the boreholes.
- the blowing nozzle is designed to be pushed into the borehole.
- the outer diameter of the blast nozzle can be matched to the inner diameter of the borehole.
- the diameter of the blast nozzle is designed to be smaller than the respective boreholes to be cleaned, so that the blast nozzle can be used for a large number of boreholes with larger dimensions.
- the device according to the invention can have several blowing nozzles and several suction nozzles in order, for example, to clean several boreholes at the same time.
- the suction nozzle is designed to be placed on a surface of an object in which the borehole is located.
- the diameter of the suction nozzle, at least in the area of a flow inlet, is larger than that of the boreholes to be cleaned, so that the suction nozzle can be used for a large number of boreholes with smaller dimensions.
- the suction nozzle can be provided with a peripheral elastic seal so that it can be placed sealingly on the surface of the object.
- blowing nozzle is offset relative to the suction nozzle at least during operation of the device along an outflow and inflow direction of the device.
- the blowing nozzle protrudes into the borehole during a cleaning process of a borehole by means of a device, while the suction nozzle stands up along the outflow and inflow direction of the device offset to the blowing nozzle on the surface around the borehole.
- the suction nozzle protrudes into the borehole to be cleaned, while the blowing nozzle stands on the surface around the borehole.
- the tuyere or the suction nozzle stands on the surface around the wellbore, while the suction nozzle or the tuyere does not protrude into the wellbore.
- the blowing nozzle is completely surrounded by the suction nozzle in the radial direction to the outflow direction and/or the inflow direction of the device.
- the blowing nozzle is arranged centrally when viewed over a cross section of the suction nozzle and projects out of the suction nozzle along the outflow direction and/or inflow direction of the device.
- the central arrangement can make handling easier for an operator in terms of hitting the blast nozzle in the respective borehole.
- the suction nozzle is designed to be flexible at a free end in order to adapt to a surface of an object that surrounds a borehole.
- the suction nozzle particularly preferably adapts itself to the surface when it is placed on it, even if the device is pressed onto the surface at an angle. Even if it is placed at an angle, the suction nozzle is sealed off from the surface and drilling dust is prevented from escaping.
- the suction nozzle has a seal at the free end for contact with the surface.
- the seal which can run around the suction nozzle, it is possible to almost completely seal off the borehole from the environment, so that during use of the device almost no or no drilling dust escapes into a space surrounding the device.
- the vacuum used by the pump can also be used completely to suck off drilling dust.
- the blowing nozzle is designed to be flexible at a free end.
- the blowing nozzle When pushed into the borehole, particularly preferably adapts to a course of the borehole if the device is attached, for example, at an angle to the longitudinal extension of the borehole and the blowing nozzle is pushed into the borehole.
- blowing nozzle is beveled at the free end, so as not to impede the discharge of a gas when standing up at the bottom of a borehole.
- the blowing nozzle cannot be beveled at the free end and instead has slots, for example, from which a gas, in particular the air flow, emerges during use of the device and whirls up the drilling dust.
- the blowing nozzle is perforated at the free end, so that the blowing nozzle can stand up on a bottom of the borehole during use of the device and the gas, in particular the air flow, emerges from the holes during use of the device and swirls up the drilling dust .
- the suction nozzle is mounted to be displaceable and/or deformable in the axial direction relative to the blowing nozzle, so that the blowing nozzle can be positioned to match a depth of the borehole.
- the blowing nozzle is rigidly attached to the device, whereas the suction nozzle is mounted so that it can be displaced relative to the blowing nozzle along the outflow and inflow direction of the device, ie in the axial direction.
- the suction nozzle can preferably be prestressed by means of a spring.
- the suction nozzle can, for example, be designed in the shape of an accordion, at least in sections, so that it folds together at least in sections when the blowing nozzle is pushed into the borehole in the axial direction of the device.
- the suction nozzle is of rigid design, whereas the blowing nozzle is mounted so that it can be displaced in the axial direction relative to the suction nozzle.
- the filter element has a filter housing, a filter insert and a service flap in the filter housing for removing residues from the filter insert.
- both coarse drilling dust that is deposited in front of the filter insert can be removed from the filter element via the service flap, and the filter insert that absorbs fine drilling dust and separates it from the air flow can be replaced.
- the device is particularly advantageous to use the device as an at least almost closed system, so that the drilling dust is whirled up and sucked off as alternating or simultaneous steps and almost no or no drilling dust is released from the borehole into the environment around the device.
- it can be a closed air circuit.
- the pump for generating the air flow is operated manually or electrically.
- the pump sucks in air that has already been filtered by means of the filter element and compresses it so that it can then be conducted into the borehole via the outlet channel and the blower nozzle of the device that closes off the outlet channel.
- the compressed air flow is blown into the borehole by means of the device, ensures an overpressure relative to the ambient pressure in the borehole and whirls up the drilling dust located in the borehole.
- the pump sucks in air that has already been filtered by means of the filter element and thus generates a negative pressure upstream of the pump. This creates a negative pressure at the suction nozzle located at the end of the intake port.
- the whirled up by the introduced, compressed air flow drilling dust is through the Sucked in by the suction nozzle and filtered from the air flow by means of the filter element, with the filtered air flow being sucked in by the pump.
- the pump sucks in almost no or no ambient air that is outside the device and the borehole, but only the compressed air flow introduced into the borehole, including drilling dust.
- the device removes the drilling dust from this air flow together with the drilling dust by means of the filter element and feeds it back into the borehole via the pump, in order to achieve an at least approximately closed circuit.
- an arrangement comprising a borehole in an object and a device according to the invention for cleaning the borehole, the blowing nozzle being arranged in the borehole and the suction nozzle being pressed against a surface of the object around the borehole.
- the object in which the borehole is arranged is a building wall, to which components are fastened using dowels and screws.
- the device 1 shows a schematic representation of a device 1 according to the invention for cleaning a borehole 50, see FIG 2 , in a sectional view.
- the device 1 has a Intake channel 10 with a suction nozzle 100 on.
- the suction nozzle 100 is connected to the intake port 10 so that there is a flow connection between the suction nozzle 100 and the intake port 10, and has a seal 102 at a free end.
- the intake channel 10 leads to a filter element 12 and is consequently in flow connection with the filter element 12.
- the filter element 12 is connected via a further section of the intake channel 10, alternatively also directly, to a pump 14 for a flow connection, the pump 14 being connected on the suction side to the Filter element 12 is connected so that the pump 14 draws in filtered air.
- the device 1 has an outlet channel 16 with a blowing nozzle 160 , the outlet channel 16 leading from the pump 14 to the blowing nozzle 160 .
- the pump 14 is connected to the outlet channel 16 on the outlet side.
- the blowing nozzle 160 is connected to the outlet channel 16, is thus in flow connection with the outlet channel 16, and is formed at a bevel at a free end.
- the blowing nozzle 160 of the outlet channel 16 is surrounded by the suction nozzle 100 in the radial direction with respect to an outflow direction SA and an inflow direction SE, with the blowing nozzle 160 being arranged centrally in the radial direction with respect to the suction nozzle 100 .
- a free end of the blowing nozzle 160 is flush with a free end of the suction nozzle 100 formed by the seal 102 as long as the device 1 is not being used 160 into a well to facilitate.
- the suction nozzle 100 is mounted displaceably relative to the blowing nozzle 160 in the outflow direction SA and in the inflow direction SE.
- the suction nozzle 100 is prestressed by means of a spring 104 in such a way that the seal 102 is kept at the same height as the free end of the blowing nozzle 160 along the outflow and inflow direction SE, SA as long as the device 1 is not being used, but in the 1 state shown is maintained.
- the suction nozzle 100 can be pushed relative to the blowing nozzle 160 under compression of the spring 104 in the inflow direction SE of the device 1, so that the blowing nozzle 160 then projects relative to the suction nozzle 100.
- the representation of 1 is schematic and only serves to explain the functional principle and the individual components of the device 1 .
- FIG. 2 shows a schematic representation of an arrangement with a borehole 50 in an object 5, for example a building wall, and with the device 1 according to the invention for cleaning the borehole 50 from drilling dust.
- the device 1 of 1 is positioned in operation in extension of a main extension direction of the borehole 50, so that the Outflow direction SA and the inflow direction SE of the device 1 are aligned with the main direction of extent of the borehole 50 .
- the blast nozzle 160 is pushed into the borehole 50 so far that the blast nozzle 160 stands up with the slanted end on a bottom of the borehole 50 .
- a diameter of the blast nozzle 160 is smaller than a diameter of the borehole 50 so that drilling dust to be removed can be conveyed out of the borehole 50 around the blast nozzle 160 .
- the tuyere 160 is beveled so that air can escape even though the end rests on the bottom of the borehole 50 .
- the suction nozzle 100 is pushed back relative to the blowing nozzle 160 in the inflow direction SE of the device 1 under compression of the spring 104 and rests on a surface 52 of the element 5 .
- the seal 102 is pressed onto the surface 52 by the spring 104 and provides a seal against an environment arranged around the device 1 and the element 5 .
- the device 1 In order to clean the borehole 50, the device 1 is placed in the area of the borehole 50 on the object 5, for example on a building wall. The device 1 is then moved along the outflow direction SA of the device 1 and the blowing nozzle 160 is thereby pushed into the borehole 50 . The spring 104 is compressed and the suction nozzle 100 is displaced relative to the blowing nozzle 160 along the inflow direction SE. The seal 102 of the suction nozzle 100 is pressed onto the surface 52 of the element 5.
- the device 1 can be put into operation.
- the pump 14 generates an overpressure on the outlet side and generates an air flow which is introduced into the borehole 50 via the outlet channel 16 and via the blast nozzle 160 .
- the drilling dust to be removed is whirled up by introducing the air flow and generating an overpressure in the borehole.
- the pump also creates a vacuum on the suction side at the same time. Through the suction nozzle 100, the suction channel 10 and the filter element 12 through the whirled up drilling dust is sucked together with the air flow.
- An interface between the surface 52 of the element 5 and the device 1 is sealed in that the seal 102 is pressed onto the surface 52 around the borehole 50 by means of the prestressed spring 104 .
- As an abutment for receiving The forces acting on the spring 104 are used in this case by the object 5 and a user who presses the device 1 with the blowing nozzle 160 into the borehole 50 .
- the drilling dust stirred up by the air flow flows to the pump 14 through the filter element 12 so that the drilling dust remains at least almost completely in a filter insert of the filter element 12 which can be cleaned by the user after using the device 1 .
- the filtered air flow passes through to the pump 14 , is compressed and blown back into the well 50 .
- the borehole 50 is thus cleaned via a closed circuit which is formed by the device 1 and the element 5 , in particular by the borehole 50 and the surface 52 .
- An air flow generated by the device 1 is both blown into the borehole 50 by means of the device 1 and sucked out of it again after the drilling dust has been stirred up.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum Reinigen eines Bohrlochs sowie ein Verfahren zum Reinigen eines Bohrlochs mittels der Vorrichtung und eine Anordnung mit der erfindungsgemäßen Vorrichtung und einem Bohrloch in einem Gegenstand.The invention relates to a device for cleaning a borehole and a method for cleaning a borehole using the device and an arrangement with the device according to the invention and a borehole in an object.
Das Dokument
Die deutsche Offenlegungsschrift
Aus der deutschen Gebrauchsmusterschrift
Aus der deutschen Patentschrift
Aus der europäischen Offenlegungsschrift
Aus der französischen Offenlegungsschrift
Aus der europäischen Offenlegungsschrift
Aus der US-Offenlegungsschrift
Aus der deutschen Offenlegungsschrift
Aus der europäischen Offenlegungsschrift
Aus der chinesischen Offenlegungsschrift
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung, ein Verfahren und eine Anordnung zu schaffen, mittels derer eine Bohrlochreinigung verbessert wird.The invention is based on the object of creating a device, a method and an arrangement by means of which borehole cleaning is improved.
Zur Lösung der Aufgabe ist erfindungsgemäß eine Vorrichtung zum Reinigen von Bohrlöchern gemäß Anspruch 1 sowie ein Verfahren zum Reinigen eines Bohrlochs mittels der Vorrichtung gemäß Anspruch 11 und eine Anordnung mit einem Bohrloch in einem Gegenstand und der Vorrichtung gemäß Anspruch 15 vorgesehen. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen 2 bis 10 sowie 12 bis 14 angegeben.To achieve the object, a device for cleaning boreholes according to
Gemäß der Erfindung ist eine Vorrichtung zum Reinigen eines Bohrlochs mit einem Ansaugkanal, mit einem Filterelement, mit einer Pumpe und mit einem Auslasskanal vorgesehen, wobei die Pumpe eine Ansaugseite und eine Auslassseite aufweist, wobei der Ansaugkanal mit dem Filterelement für eine Strömungsverbindung verbunden ist, wobei das Filterelement mit der Ansaugseite der Pumpe für eine Strömungsverbindung verbunden ist, wobei die Auslassseite der Pumpe mit dem Auslasskanal für eine Strömungsverbindung verbunden ist, wobei der Ansaugkanal zumindest eine Saugdüse zum Ansaugen von Bohrstaub aus dem Bohrloch aufweist und wobei der Auslasskanal zumindest eine Blasdüse zum Aufwirbeln von Bohrstaub in dem Bohrloch aufweist.According to the invention there is provided a device for cleaning a well with a suction channel, with a filter element, with a pump and with a discharge channel, the pump having a suction side and a discharge side, the suction channel being connected to the filter element for a flow connection, wherein the filter element is connected to the suction side of the pump for flow connection, the outlet side of the pump being connected to the outlet channel for flow connection, the suction channel having at least one suction nozzle for sucking up drill dust from the borehole and the outlet channel having at least one blowing nozzle for turbulence of drilling dust in the borehole.
Bei modernen Dübelsystemen kann die Anbringung der Dübelsysteme zulassungsrelevant sein. Zulassungsrelevant bedeutet in diesem Kontext, dass das Dübelsystem - bestehend aus Dübel, Schraube/ Mutter / Untergrund (genormter Beton, Ziegel und dergleichen) - und auch das Herstellen und die Reinigung eines Bohrlochs exakt dokumentiert sind. Das Setzen des Dübels einschließlich des Herstellens des Bohrlochs und des Reinigens des Bohrlochs muss in der in der Vorschrift beschriebenen Reihenfolge und in dem beschriebenen Umfang durchgeführt werden. Erst dann ist die geforderte Sicherheit für Mensch und Umwelt durch korrekt befestigte Bauteile, beispielsweise freitragende Balkone aus Metallkonstruktionen, gegeben. Für die Bohrlochreinigung kann ein Gas, beispielsweise Luft, unter Druck in das Bohrloch eingetrieben werden.With modern dowel systems, the attachment of the dowel systems can be relevant for approval. Approval-relevant in this context means that the anchor system - consisting of anchor, screw/nut/substructure (standardized concrete, brick and the like) - and also the production and cleaning of a drill hole are precisely documented. The setting of the anchor, including the creation of the drill hole and the cleaning of the drill hole, must be carried out in the order and to the extent described in the regulation. Only then can the required safety for people and the environment be achieved through correctly fastened components, such as self-supporting balconies made of metal structures, given. A gas, for example air, can be forced into the well under pressure to clean the well.
Mit der Erfindung wird das Austreten des Staubes aus dem Bohrloch sowohl in die Umgebung als auch auf den Bediener beim Vorgang der herkömmlichen Bohrlochreinigung vermieden. Darüber hinaus kann eine Bohrlochreinigung mit der erfindungsgemäßen Vorrichtung wesentlich effektiver durchgeführt werden, bei einer handbetätigten Pumpe beispielsweise durch wesentlich weniger Pumpbewegungen als bei konventionellen Vorrichtungen und bei elektrisch betriebenen Pumpen wesentlich schneller als bei bekannten Vorrichtungen.The invention prevents the dust from escaping from the borehole, both into the environment and onto the operator during the conventional borehole cleaning process. In addition, a borehole can be cleaned much more effectively with the device according to the invention, with a hand-operated pump, for example, with significantly fewer pumping movements than with conventional devices and with electrically operated pumps significantly faster than with known devices.
Eine Verschmutzung der Baustelle, eine Belastung der Umwelt durch Staub sowie auch eine Belastung eines Bedieners durch aus dem Bohrloch austretenden Staub kann durch die Erfindung damit vollständig oder zumindest nahezu vollständig vermieden werden. Vor allem die Erleichterung für den Bediener stellt sicher, dass dieser die Bohrlochreinigung tatsächlich vornimmt und nicht lediglich halbherzig oder gar nicht ausführt. Das Risiko für den Bediener bei Leistungsansprüchen in Haftung genommen zu werden, wird dadurch vollständig vermieden.Contamination of the construction site, pollution of the environment by dust and also exposure of an operator to dust escaping from the borehole can be avoided completely or at least almost completely by means of the invention. Above all, the simplification for the operator ensures that he actually cleans the borehole and does not just do it half-heartedly or not at all. This completely avoids the risk for the operator of being held liable in the event of a claim.
Indem mit der erfindungsgemäßen Vorrichtung sowohl Luft in das Bohrloch mittels der Blasdüse eingeblasen wird, um dadurch den Bohrstaub in dem Bohrloch aufzuwirbeln, und gleichzeitig Luft aus dem Bohrloch angesaugt und über einen Filter wieder zu der Pumpe geführt wird, wird ein geschlossener Kreislauf oder nahezu geschlossener Kreislauf für die Luft bereitgestellt. Dadurch kann vermieden werden, dass Bohrstaub in die Umgebung austritt. Die Reinigung des Bohrlochs kann wesentlich gründlicher erfolgen als dies bei konventionellen Vorrichtungen der Fall ist. Bei konventionellen Vorrichtungen wird das Bohrloch entweder ausschließlich ausgeblasen, beispielsweise durch Einblasen von Druckluft oder das Bohrloch wird ausschließlich ausgesaugt, beispielsweise durch Ansetzen eines Staubsaugers. Die erfindungsgemäße Vorrichtung kombiniert das Einblasen von Luft in das Bohrloch und das Absaugen von Luft aus dem Bohrloch. Dadurch kann die Reinigung besonders gründlich und gleichzeitig effizient erfolgen.By blowing air into the borehole using the blowing nozzle with the device according to the invention, in order to whirl up the drilling dust in the borehole, and at the same time air is sucked out of the borehole and fed back to the pump via a filter, a closed circuit or almost closed circuit is created Circuit provided for the air. This can prevent drilling dust from escaping into the environment. The borehole can be cleaned much more thoroughly than is the case with conventional devices. In conventional devices, the borehole is either exclusively blown out, for example by blowing in compressed air, or the borehole is exclusively sucked out, for example by applying a vacuum cleaner. The device according to the invention combines blowing air into the well and sucking air out of the well. This means that cleaning can be carried out particularly thoroughly and efficiently at the same time.
Die Vorrichtung ist in einer bevorzugten Ausgestaltung aus leichtem Material hergestellt, wie beispielsweise Kunststoff, so dass das Gewicht der Vorrichtung gering ist und eine Handhabung erleichtert wird. Bevorzugt ist die Vorrichtung so dimensioniert, dass sie sich für einen Handbetrieb eignet.In a preferred embodiment, the device is made of light-weight material, such as plastic, so that the weight of the device is low and handling is facilitated. The device is preferably dimensioned in such a way that it is suitable for manual operation.
Die Pumpe kann eine manuelle, elektrische, hydraulische oder pneumatische Pumpe sein, wobei die Pumpe kontinuierlich oder diskontinuierlich betreibbar ist. Sofern es sich um eine Ausgestaltung der Vorrichtung handelt, bei welcher die Pumpe Strom benötigt, kann eine Batterie oder ein Akkumulator vorgesehen sein oder es kann ein Netzbetrieb über ein Stromkabel vorgesehen sein. Beispielsweise handelt es sich bei der Pumpe um eine Doppelhubpumpe, bei der also in einem Hub gleichzeitig Luft angesaugt und ausgeblasen wird, oder um eine elektrische Pumpe.The pump may be manual, electric, hydraulic or pneumatic, the pump being operable continuously or intermittently. Unless it's a Configuration of the device is, in which the pump requires electricity, a battery or an accumulator can be provided or it can be provided a mains operation via a power cable. For example, the pump is a double-stroke pump, in which air is sucked in and blown out simultaneously in one stroke, or an electric pump.
Unter Bohrlöchern sind vorliegend Löcher zu verstehen, die mit Dübeln, speziell Kunststoffdübeln und chemischen Dübeln, beispielsweise zwei-Komponenten-Mörtel, zu versehen sind. Solche Löcher werden beispielsweise in Beton oder Ziegel gebohrt. Die Bohrlöcher sind in der Regel als Sacklöcher ausgebildet, in denen sich beim Bohren Bohrstaub sammelt. Der Bohrstaub kann mittels der erfindungsgemäßen Vorrichtung zumindest soweit aus den Bohrlöchern entfernt werden, dass Bauteile korrekt und mit einer entsprechenden Sicherheit befestigt werden können. Speziell können mit der erfindungsgemäßen Vorrichtung Zulassungsvorschriften beim Setzen von Dübeln zuverlässig erfüllt werden.In the present case, boreholes are to be understood as meaning holes that are to be provided with dowels, especially plastic dowels and chemical dowels, for example two-component mortar. Such holes are drilled, for example, in concrete or brick. The boreholes are usually designed as blind holes in which drill dust collects during drilling. The drilling dust can be removed from the boreholes at least to the extent that components can be fixed correctly and with a corresponding level of security using the device according to the invention. In particular, with the device according to the invention, approval regulations can be reliably met when setting anchors.
In Ausgestaltungen basiert das Filterelement auf einem Siebeffekt, einem Massenträgheitseffekt, einem Abfangeffekt oder einem Diffusionseffekt, so dass einem durch die Vorrichtung zirkulierenden Luftstrom der Bohrstaub entzogen werden kann.In configurations, the filter element is based on a sieve effect, a mass inertia effect, an interception effect or a diffusion effect, so that the drilling dust can be extracted from an air flow circulating through the device.
Besonders vorteilhaft können Bohrstaub oder sonstige vorzugsweise lose Materialien mit geringer Partikelgröße, insbesondere Partikelgröße kleiner 50 µm, aus Bohrlöchern mittels der Vorrichtung entfernt werden, ohne dass der Bohrstaub oder die sonstigen, beispielsweise losen Materialien in eine Umgebung außerhalb der Bohrlöcher abgegeben werden.Drilling dust or other preferably loose materials with a small particle size, in particular a particle size of less than 50 μm, can be removed from boreholes using the device in a particularly advantageous manner without the drilling dust or other, for example loose, materials being released into an environment outside of the boreholes.
In Weiterbildung der Erfindung ist vorgesehen, dass die Blasdüse zum Einschieben in das Bohrloch ausgebildet ist. Der Außendurchmesser der Blasdüse kann hierbei auf den Innendurchmesser des Bohrlochs abgestimmt sein.In a development of the invention, it is provided that the blowing nozzle is designed to be pushed into the borehole. The outer diameter of the blast nozzle can be matched to the inner diameter of the borehole.
In bevorzugten Ausgestaltungen ist die Blasdüse zumindest im Bereich eines Strömungsausgangs in ihrem Durchmesser kleiner ausgestaltet als die jeweiligen zu reinigenden Bohrlöcher, so dass die Blasdüse für eine Vielzahl an größer dimensionierten Bohrlöchern benutzbar ist.In preferred configurations, the diameter of the blast nozzle, at least in the region of a flow outlet, is designed to be smaller than the respective boreholes to be cleaned, so that the blast nozzle can be used for a large number of boreholes with larger dimensions.
Die erfindungsgemäße Vorrichtung kann mehrere Blasdüsen und mehrere Saugdüsen aufweisen, um beispielsweise mehrere Bohrlöcher gleichzeitig zu Reinigen.The device according to the invention can have several blowing nozzles and several suction nozzles in order, for example, to clean several boreholes at the same time.
In Weiterbildung der Erfindung ist vorgesehen, dass die Saugdüse zum Aufsetzen auf eine Oberfläche eines Gegenstands, in dem sich das Bohrloch befindet, ausgebildet ist.In a development of the invention, it is provided that the suction nozzle is designed to be placed on a surface of an object in which the borehole is located.
In bevorzugten Ausgestaltungen ist die Saugdüse zumindest im Bereich eines Strömungseingangs in ihrem Durchmesser größer ausgestaltet als die jeweiligen zu reinigenden Bohrlöcher, so dass die Saugdüse für eine Vielzahl an kleiner dimensionierten Bohrlöchern benutzbar ist. Die Saugdüse kann mit einer umlaufenden elastischen Dichtung versehen sein, damit sie dichtend auf die Oberfläche des Gegenstands aufgesetzt werden kann.In preferred configurations, the diameter of the suction nozzle, at least in the area of a flow inlet, is larger than that of the boreholes to be cleaned, so that the suction nozzle can be used for a large number of boreholes with smaller dimensions. The suction nozzle can be provided with a peripheral elastic seal so that it can be placed sealingly on the surface of the object.
In Weiterbildung der Erfindung ist vorgesehen, dass die Blasdüse gegenüber der Saugdüse zumindest während eines Betriebs der Vorrichtung entlang einer Aus- und Einströmrichtung der Vorrichtung versetzt angeordnet ist.In a further development of the invention, it is provided that the blowing nozzle is offset relative to the suction nozzle at least during operation of the device along an outflow and inflow direction of the device.
In bevorzugten Ausgestaltungen ragt die Blasdüse während eines Reinigungsvorgangs eines Bohrloches mittels Vorrichtung in das Bohrloch hinein, während die Saugdüse entlang der Aus- und Einströmrichtung der Vorrichtung versetzt zu der Blasdüse auf der Oberfläche um das Bohrloch herum aufsteht.In preferred embodiments, the blowing nozzle protrudes into the borehole during a cleaning process of a borehole by means of a device, while the suction nozzle stands up along the outflow and inflow direction of the device offset to the blowing nozzle on the surface around the borehole.
In weiteren Ausgestaltungen ragt die Saugdüse in das zu reinigende Bohrloch hinein, während die Blasdüse auf der Oberfläche um das Bohrloch herum aufsteht. In noch weiteren Ausgestaltungen steht die Blasdüse oder die Saugdüse auf der Oberfläche um das Bohrloch herum auf, während die Saugdüse oder die Blasdüse nicht in das Bohrloch hineinragt.In further configurations, the suction nozzle protrudes into the borehole to be cleaned, while the blowing nozzle stands on the surface around the borehole. In still further embodiments, the tuyere or the suction nozzle stands on the surface around the wellbore, while the suction nozzle or the tuyere does not protrude into the wellbore.
In Weiterbildung der Erfindung ist vorgesehen, dass die Blasdüse in radialer Richtung zu der Ausströmrichtung und/oder der Einströmrichtung der Vorrichtung vollständig von der Saugdüse umgeben ist.In a development of the invention, it is provided that the blowing nozzle is completely surrounded by the suction nozzle in the radial direction to the outflow direction and/or the inflow direction of the device.
In bevorzugten Ausgestaltungen ist die Blasdüse über einen Querschnitt der Saugdüse betrachtet mittig angeordnet und ragt entlang der Ausströmrichtung und/oder Einströmrichtung der Vorrichtung aus der Saugdüse heraus. Durch die mittige Anordnung kann einem Bediener die Handhabung hinsichtlich einer Treffsicherheit der Blasdüse in das jeweilige Bohrloch erleichtert werden.In preferred configurations, the blowing nozzle is arranged centrally when viewed over a cross section of the suction nozzle and projects out of the suction nozzle along the outflow direction and/or inflow direction of the device. The central arrangement can make handling easier for an operator in terms of hitting the blast nozzle in the respective borehole.
In Weiterbildung der Erfindung ist vorgesehen, dass die Saugdüse an einem freien Ende flexibel ausgebildet ist, um sich an eine Oberfläche eines Gegenstands anzupassen, die ein Bohrloch umgibt.In a development of the invention, it is provided that the suction nozzle is designed to be flexible at a free end in order to adapt to a surface of an object that surrounds a borehole.
Besonders bevorzugt passt sich die Saugdüse beim Aufsetzen auf die Oberfläche eben dieser an, auch wenn die Vorrichtung schräg auf die Oberfläche aufgedrückt wird. Auch bei schrägem Aufsetzen ist die Saugdüse dadurch gegenüber der Oberfläche abgedichtet und es wird verhindert, dass Bohrstaub austritt.The suction nozzle particularly preferably adapts itself to the surface when it is placed on it, even if the device is pressed onto the surface at an angle. Even if it is placed at an angle, the suction nozzle is sealed off from the surface and drilling dust is prevented from escaping.
In Weiterbildung der Erfindung ist vorgesehen, dass die Saugdüse an dem freien Ende eine Dichtung zur Anlage an die Oberfläche aufweist.In a development of the invention, it is provided that the suction nozzle has a seal at the free end for contact with the surface.
Mittels der Dichtung, die um die Saugdüse umlaufen kann, ist eine nahezu vollständige Abdichtung des Bohrlochs gegenüber der Umgebung möglich, so dass während der Anwendung der Vorrichtung nahezu kein bis kein Bohrstaub in einen die Vorrichtung umgebenden Raum austritt. Auch kann der von der Pumpe genutzte Unterdruck vollständig zum Absaugen von Bohrstaub genutzt werden.By means of the seal, which can run around the suction nozzle, it is possible to almost completely seal off the borehole from the environment, so that during use of the device almost no or no drilling dust escapes into a space surrounding the device. The vacuum used by the pump can also be used completely to suck off drilling dust.
Gemäß der Erfindung ist vorgesehen, dass die Blasdüse an einem freien Ende flexibel ausgebildet ist.According to the invention it is provided that the blowing nozzle is designed to be flexible at a free end.
Besonders bevorzugt passt sich die Blasdüse beim Einschieben in das Bohrloch einem Verlauf des Bohrlochs an, wenn die Vorrichtung beispielsweise schräg zur Längserstreckung des Bohrlochs angesetzt und die Blasdüse in das Bohrloch eingeschoben wird.When pushed into the borehole, the blowing nozzle particularly preferably adapts to a course of the borehole if the device is attached, for example, at an angle to the longitudinal extension of the borehole and the blowing nozzle is pushed into the borehole.
In Weiterbildung der Erfindung ist vorgesehen, dass die Blasdüse an dem freien Ende abgeschrägt ausgebildet ist, um beim Aufstehen am Boden eines Bohrlochs ein Auslassen eines Gases nicht zu behindern.In a further development of the invention, it is provided that the blowing nozzle is beveled at the free end, so as not to impede the discharge of a gas when standing up at the bottom of a borehole.
In alternativen Ausgestaltungen kann die Blasdüse an dem freien Ende nicht abgeschrägt sein und weist beispielsweise stattdessen Schlitze auf, aus denen ein Gas, insbesondere der Luftstrom, während der Anwendung der Vorrichtung austritt und den Bohrstaub aufwirbelt. In weiteren Ausgestaltungen ist die Blasdüse an dem freien Ende perforiert ausgebildet, so dass die Blasdüse während der Anwendung der Vorrichtung auf einem Boden des Bohrlochs aufstehen kann und das Gas, insbesondere der Luftstrom, während der Anwendung der Vorrichtung aus den Löchern austritt und den Bohrstaub aufwirbelt.In alternative configurations, the blowing nozzle cannot be beveled at the free end and instead has slots, for example, from which a gas, in particular the air flow, emerges during use of the device and whirls up the drilling dust. In further configurations, the blowing nozzle is perforated at the free end, so that the blowing nozzle can stand up on a bottom of the borehole during use of the device and the gas, in particular the air flow, emerges from the holes during use of the device and swirls up the drilling dust .
In Weiterbildung der Erfindung ist vorgesehen, dass die Saugdüse relativ zu der Blasdüse in axialer Richtung verschiebbar gelagert ist und/oder verformbar ist, so dass die Blasdüse angepasst an eine Tiefe des Bohrlochs positioniert werden kann.In a further development of the invention, it is provided that the suction nozzle is mounted to be displaceable and/or deformable in the axial direction relative to the blowing nozzle, so that the blowing nozzle can be positioned to match a depth of the borehole.
In einer Ausgestaltung ist die Blasdüse starr an der Vorrichtung befestigt, wohingegen die Saugdüse entlang der Aus- und Einströmrichtung der Vorrichtung, also in axialer Richtung, relativ zu der Blasdüse verschiebbar gelagert ist. Die Saugdüse kann bevorzugt mittels einer Feder vorgespannt sein. In einer weiteren Ausgestaltung kann die Saugdüse beispielsweise zumindest abschnittsweise ziehharmonikaförmig ausgebildet sein, so dass sie sich beim Einschieben der Blasdüse in das Bohrloch in axialer Richtung der Vorrichtung zumindest abschnittsweise zusammenfaltet.In one embodiment, the blowing nozzle is rigidly attached to the device, whereas the suction nozzle is mounted so that it can be displaced relative to the blowing nozzle along the outflow and inflow direction of the device, ie in the axial direction. The suction nozzle can preferably be prestressed by means of a spring. In a further embodiment, the suction nozzle can, for example, be designed in the shape of an accordion, at least in sections, so that it folds together at least in sections when the blowing nozzle is pushed into the borehole in the axial direction of the device.
In einer weiteren Ausgestaltung kann beispielsweise vorgesehen sein, dass die Saugdüse starr ausgebildet ist, wohingegen die Blasdüse in axialer Richtung relativ zu der Saugdüse verschiebbar gelagert ist.In a further embodiment, it can be provided, for example, that the suction nozzle is of rigid design, whereas the blowing nozzle is mounted so that it can be displaced in the axial direction relative to the suction nozzle.
In Weiterbildung der Erfindung ist vorgesehen, dass das Filterelement ein Filtergehäuse, einen Filtereinsatz und eine Serviceklappe in dem Filtergehäuse zum Entfernen von Rückständen aus dem Filtereinsatz aufweist.In a development of the invention, it is provided that the filter element has a filter housing, a filter insert and a service flap in the filter housing for removing residues from the filter insert.
In bevorzugten Ausgestaltungen ist über die Serviceklappe sowohl grober Bohrstaub aus dem Filterelement entfernbar, der sich vor dem Filtereinsatz ablagert, als auch der Filtereinsatz austauschbar, der feinen Bohrstaub aufnimmt und aus dem Luftstrom abscheidet.In preferred configurations, both coarse drilling dust that is deposited in front of the filter insert can be removed from the filter element via the service flap, and the filter insert that absorbs fine drilling dust and separates it from the air flow can be replaced.
Gemäß der Erfindung ist ein Verfahren zum Reinigen eines Bohrlochs mittels einer erfindungsgemäßen Vorrichtung vorgesehen, aufweisend folgende Schritte:
- Ansetzen der Vorrichtung im Bereich des Bohrlochs,
- Aufwirbeln von sich in dem Bohrloch befindenden Bohrstaub mittels der Vorrichtung,
- Absaugen des aufgewirbelten Bohrstaubs aus dem Bohrloch mittels der Vorrichtung.
- Attachment of the device in the area of the borehole,
- whirling up drilling dust in the borehole by means of the device,
- Extracting the drill dust that has been thrown up out of the drill hole using the device.
Besonders vorteilhaft ist die Anwendung der Vorrichtung als zumindest nahezu geschlossenes System ausgeführt, so dass das Aufwirbeln und Absaugen des Bohrstaubs als alternierende oder zeitgleiche Schritte ausgeführt sind und nahezu kein bis kein Bohrstaub aus dem Bohrloch in die um die Vorrichtung herum angeordnete Umgebung abgegeben wird. Mit anderen Worten kann es sich um einen geschlossenen Luftkreislauf handeln.It is particularly advantageous to use the device as an at least almost closed system, so that the drilling dust is whirled up and sucked off as alternating or simultaneous steps and almost no or no drilling dust is released from the borehole into the environment around the device. In other words, it can be a closed air circuit.
In Weiterbildung der Erfindung ist vorgesehen, dass beim Ansetzen der Vorrichtung die Blasdüse in das Bohrloch hineingeschoben wird und die Saugdüse an eine Oberfläche um das Bohrloch herum angedrückt wird.In a further development of the invention it is provided that when the device is attached, the blowing nozzle is pushed into the borehole and the suction nozzle is pressed against a surface around the borehole.
Besonders vorteilhaft ist durch Andrücken der Saugdüse an die Oberfläche um das Bohrloch herum gewährleistet, dass nahezu kein bis kein Bohrstaub aus dem Bohrloch in die Umgebung abgegeben wird. Somit ist verhindert, dass ein Bediener dem Bohrstaub aus dem Bohrloch während der Anwendung der Vorrichtung ausgesetzt ist.By pressing the suction nozzle against the surface around the borehole, it is particularly advantageous to ensure that almost no or no drilling dust is released from the borehole into the environment. Thus, an operator is prevented from being exposed to drill dust from the borehole during use of the device.
In Weiterbildung der Erfindung ist vorgesehen, dass das Aufwirbeln des Bohrstaubs aus dem Bohrloch mittels der Vorrichtung folgende Schritte aufweist:
- Erzeugung eines Überdrucks in Form eines Luftstroms mittels der Pumpe,
- Auslassen des Luftstroms in das Bohrloch über den Auslasskanal und die sich an den Auslasskanal anschließende Blasdüse,
- Aufwirbeln des Bohrstaubs durch den eingeleiteten Luftstrom und Erzeugen eines Gemisches aus Bohrstaub und Luft.
- generation of an overpressure in the form of an air flow by means of the pump,
- Discharging the air flow into the borehole via the discharge channel and the tuyere connected to the discharge channel,
- The drill dust is whirled up by the introduced air flow and a mixture of drill dust and air is generated.
In Ausgestaltungen findet ein Betrieb der Pumpe zum Erzeugen des Luftstroms händisch oder elektrisch statt. In einer bevorzugten Ausgestaltung saugt die Pumpe bereits mittels des Filterelements gefilterte Luft an und verdichtet diese, damit sie darauffolgend über den Auslasskanal und die den Auslasskanal abschließende Blasdüse der Vorrichtung in das Bohrloch geleitet werden kann. Der verdichtete Luftstrom wird mittels der Vorrichtung in das Bohrloch eingeblasen, sorgt für einen Überdruck relativ zum Umgebungsdruck in dem Bohrloch und wirbelt den sich in dem Bohrloch befindenden Bohrstaub auf.In configurations, the pump for generating the air flow is operated manually or electrically. In a preferred embodiment, the pump sucks in air that has already been filtered by means of the filter element and compresses it so that it can then be conducted into the borehole via the outlet channel and the blower nozzle of the device that closes off the outlet channel. The compressed air flow is blown into the borehole by means of the device, ensures an overpressure relative to the ambient pressure in the borehole and whirls up the drilling dust located in the borehole.
In Weiterbildung der Erfindung ist vorgesehen, dass das Absaugen des Bohrstaubs aus dem Bohrloch mittels der Vorrichtung folgende Schritte aufweist:
- Erzeugen eines Unterdrucks mittels der Pumpe,
- Ansaugen des Gemisches aus Bohrstaub und Luft durch die Saugdüse und den sich an die Saugdüse anschließenden Ansaugkanal,
- Führen des Gemisches aus Bohrstaub und Luft zu dem Filterelement,
- Filtern des Gemisches aus Bohrstaub und Luft, so dass der Bohrstaub in dem Filterelement verbleibt,
- Ansaugen der gefilterten Luft stromaufwärts des Filterelements mittels der Pumpe.
- generating a vacuum by means of the pump,
- Suction of the mixture of drilling dust and air through the suction nozzle and the suction channel connected to the suction nozzle,
- guiding the mixture of drilling dust and air to the filter element,
- filtering the mixture of drilling dust and air so that the drilling dust remains in the filter element,
- Suction of the filtered air upstream of the filter element by means of the pump.
In einer bevorzugten Ausgestaltung saugt die Pumpe bereits mittels des Filterelements gefilterte Luft an und erzeugt somit einen Unterdruck stromaufwärts der Pumpe. Es entsteht somit auch ein Unterdruck an der am Ende des Ansaugkanals angeordneten Saugdüse. Der durch den eingeleiteten, verdichteten Luftstrom aufgewirbelte Bohrstaub wird durch die Saugdüse angesaugt und mittels des Filterelements aus dem Luftstrom gefiltert, wobei der gefilterte Luftstrom durch die Pumpe angesaugt wird.In a preferred embodiment, the pump sucks in air that has already been filtered by means of the filter element and thus generates a negative pressure upstream of the pump. This creates a negative pressure at the suction nozzle located at the end of the intake port. The whirled up by the introduced, compressed air flow drilling dust is through the Sucked in by the suction nozzle and filtered from the air flow by means of the filter element, with the filtered air flow being sucked in by the pump.
Bevorzugt saugt die Pumpe nahezu keine bis keine Umgebungsluft an, die sich außerhalb der Vorrichtung und des Bohrlochs befindet, sondern ausschließlich den in das Bohrloch eingeleiteten verdichteten Luftstrom samt Bohrstaub. Diesem Luftstrom samt Bohrstaub entzieht die Vorrichtung mittels des Filterelements den Bohrstaub und leitet ihn über die Pumpe wieder in das Bohrloch ein, um somit ein zumindest annähernd geschlossenen Kreislauf zu realisieren.Preferably, the pump sucks in almost no or no ambient air that is outside the device and the borehole, but only the compressed air flow introduced into the borehole, including drilling dust. The device removes the drilling dust from this air flow together with the drilling dust by means of the filter element and feeds it back into the borehole via the pump, in order to achieve an at least approximately closed circuit.
Gemäß der Erfindung ist eine Anordnung mit einem Bohrloch in einem Gegenstand und einer erfindungsgemäßen Vorrichtung zum Reinigen des Bohrlochs vorgesehen, wobei die Blasdüse in dem Bohrloch angeordnet ist und die Saugdüse an eine Oberfläche des Gegenstands um das Bohrloch herum angedrückt ist.According to the invention there is provided an arrangement comprising a borehole in an object and a device according to the invention for cleaning the borehole, the blowing nozzle being arranged in the borehole and the suction nozzle being pressed against a surface of the object around the borehole.
In Ausgestaltungen ist der Gegenstand, in dem das Bohrloch angeordnet ist, eine Gebäudewand, an der Bauteile mittels Dübel und Schrauben befestigt werden. Besonders in Betracht kommen Gegenstände aus Materialien, bei denen beim Bohren sehr feine Späne oder Staub entstehen, beispielsweise Beton, Ziegel, Holz oder Stein.In configurations, the object in which the borehole is arranged is a building wall, to which components are fastened using dowels and screws. Objects made of materials that generate very fine chips or dust during drilling, such as concrete, brick, wood or stone, are particularly suitable.
Weitere Vorteile und Aspekte der Erfindung ergeben sich aus den Ansprüchen und aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels der Erfindung, das nachfolgend anhand der Figuren erläutert ist. Dabei zeigt:
- Fig. 1
- eine schematische Darstellung einer erfindungsgemäßen Vorrichtung zum Reinigen eines Bohrlochs in einer Schnittansicht und
- Fig. 2
- eine schematische Darstellung einer Anordnung mit einem Bohrloch in einem Element und der erfindungsgemäßen Vorrichtung zum Reinigen des Bohrlochs.
- 1
- a schematic representation of a device according to the invention for cleaning a borehole in a sectional view and
- 2
- a schematic representation of an arrangement with a borehole in an element and the device according to the invention for cleaning the borehole.
Der Ansaugkanal 10 führt zu einem Filterelement 12 und steht infolgedessen in Strömungsverbindung mit dem Filterelement 12. Das Filterelement 12 ist über einen weiteren Abschnitt des Ansaugkanals 10, alternativ auch unmittelbar, mit einer Pumpe 14 für eine Strömungsverbindung verbunden, wobei die Pumpe 14 ansaugseitig mit dem Filterelement 12 verbunden ist, so dass die Pumpe 14 gefilterte Luft ansaugt.The
Die Vorrichtung 1 weist einen Auslasskanal 16 mit einer Blasdüse 160 auf, wobei der Auslasskanal 16 von der Pumpe 14 bis zur Blasdüse 160 führt. Die Pumpe 14 ist auslassseitig mit dem Auslasskanal 16 verbunden. Die Blasdüse 160 ist mit dem Auslasskanal 16 verbunden, steht somit in Strömungsverbindung mit dem Auslasskanal 16, und ist an einem freien Ende abgeschrägt ausgebildet. Die Blasdüse 160 des Auslasskanals 16 ist in radialer Richtung zu einer Ausströmungsrichtung SA und einer Einströmrichtung SE von der Saugdüse 100 umgeben, wobei die Blasdüse 160 in radialer Richtung mittig zu der Saugdüse 100 angeordnet ist. Ein freies Ende der Blasdüse 160 ist, solange die Vorrichtung 1 nicht verwendet wird, bündig mit einem durch die Dichtung 102 gebildeten freien Ende der Saugdüse 100. Alternativ kann die Blasdüse 160 gegenüber der Saugdüse 100 auch in axialer Richtung vorstehen, um das Einführen der Blasdüse 160 in ein Bohrloch zu erleichtern.The
Die Saugdüse 100 ist relativ zu der Blasdüse 160 in Ausströmrichtung SA und in der Einströmrichtung SE verschiebbar gelagert. Mittels einer Feder 104 ist die Saugdüse 100 insofern vorgespannt, dass die Dichtung 102, solange die Vorrichtung 1 nicht verwendet wird, entlang der Aus- und Einströmrichtung SE, SA auf gleicher Höhe mit dem freien Ende der Blasdüse 160 gehalten wird, aber in dem in
Die Blasdüse 160 ist in das Bohrloch 50 so weit eingeschoben, dass die Blasdüse 160 mit dem abgeschrägten Ende auf einem Boden des Bohrlochs 50 aufsteht. Ein Durchmesser der Blasdüse 160 ist kleiner als ein Durchmesser des Bohrlochs 50, so dass zu entfernender Bohrstaub um die Blasdüse 160 herum aus dem Bohrloch 50 befördert werden kann. Die Blasdüse 160 ist abgeschrägt, so dass Luft austreten kann, obwohl das Ende auf dem Boden des Bohrlochs 50 aufsteht.The
Die Saugdüse 100 ist relativ zu der Blasdüse 160 in Einströmrichtung SE der Vorrichtung 1 unter Kompression der Feder 104 zurückgeschoben und steht auf einer Oberfläche 52 des Elements 5 auf. Die Dichtung 102 wird mittels der Feder 104 auf die Oberfläche 52 gedrückt und sorgt für eine Abdichtung gegenüber einer um die Vorrichtung 1 und das Element 5 angeordneten Umgebung.The
Um das Bohrloch 50 zu reinigen, wird die Vorrichtung 1 im Bereich des Bohrlochs 50 auf den Gegenstand 5, beispielsweise auf eine Gebäudewand, aufgesetzt. Die Vorrichtung 1 wird dann entlang der Ausströmrichtung SA der Vorrichtung 1 bewegt und die Blasdüse 160 wird dadurch in das Bohrloch 50 hineingeschoben. Dabei wird die Feder 104 komprimiert und die Saugdüse 100 relativ zu der Blasdüse 160 entlang der Einströmrichtung SE verschoben. Die Dichtung 102 der Saugdüse 100 wird auf die Oberfläche 52 des Elements 5 gedrückt.In order to clean the borehole 50, the
Sobald die Blasdüse 160 in dem Bohrloch 50 positioniert ist oder wenn sich die Blasdüse 160, siehe
Dabei ist eine Schnittstelle zwischen der Oberfläche 52 des Elements 5 und der Vorrichtung 1 dadurch abgedichtet, dass die Dichtung 102 mittels der vorgespannten Feder 104 um das Bohrloch 50 herum auf die Oberfläche 52 aufgedrückt wird. Als Widerlager zur Aufnahme von wirkenden Kräften der Feder 104 dient in diesem Fall der Gegenstand 5 sowie ein Anwender, der die Vorrichtung 1 mit der Blasdüse 160 in das Bohrloch 50 drückt.An interface between the
Der durch den Luftstrom aufgewirbelte Bohrstaub strömt zu der Pumpe 14 durch das Filterelement 12 hindurch, so dass der Bohrstaub zumindest nahezu vollständig in einem Filtereinsatz des Filterelements 12 verbleibt, der vom Anwender nach Gebrauch der Vorrichtung 1 gereinigt werden kann. Zu der Pumpe 14 dringt der gefilterte Luftstrom durch, wird verdichtet und wieder in das Bohrloch 50 eingeblasen. Eine Reinigung des Bohrlochs 50 geschieht somit über einen geschlossenen Kreislauf, der durch die Vorrichtung 1 und das Element 5, insbesondere durch das Bohrloch 50 und die Oberfläche 52, gebildet ist. Ein durch die Vorrichtung 1 erzeugter Luftstrom wird mittels der Vorrichtung 1 sowohl in das Bohrloch 50 eingeblasen als auch aus diesem nach Aufwirbeln des Bohrstaubs wieder abgesaugt.The drilling dust stirred up by the air flow flows to the
Claims (15)
- Apparatus (1) for cleaning a borehole (50), having:- an intake channel (10),- a filter element (12),- a pump (14), and- an outlet channel (16),wherein:- the pump (14) has an intake side and an outlet side,- the intake channel (10) is connected to the filter element (12) for a flow connection,- the filter element (12) is connected to the intake side of the pump (14) for a flow connection,- the outlet side of the pump (14) is connected to the outlet channel (16) for a flow connection,- the intake channel (10) has at least one suction nozzle (100) for sucking in drilling dust from the borehole (50), and- the outlet channel (16) has at least one blowing nozzle (160) for swirling up drilling dust in the borehole (50),characterized in that- the blowing nozzle (160) is of flexible form at a free end.
- Apparatus (1) according to Claim 1, characterized in that
the blowing nozzle (160) is of bevelled form at the free end in order not to hinder discharge of a gas if standing on the base of a borehole (50). - Apparatus (1) according to Claim 1 or 2, characterized in that
the blowing nozzle (160) is configured for being pushed into the borehole (50), wherein in particular the diameter of the blowing nozzle (160) is matched to the diameter of the borehole (50). - Apparatus (1) according to at least one of the preceding claims, characterized in that
the suction nozzle (100) is configured for placement on a surface (52) of an object (5) in which the borehole (50) is situated, in particular by way of provision of an elastic seal which runs in an encircling manner around the suction nozzle (100). - Apparatus (1) according to at least one of the preceding claims, characterized in that,
at least during an operation of the apparatus (1), the blowing nozzle (160) is arranged so as to be offset along an outflow direction (SA) and/or an inflow direction (SE) of the apparatus (1) in relation to the suction nozzle (100). - Apparatus (1) according to Claim 5, characterized in that,
radially in relation to the outflow direction and/or the inflow direction (SE) of the apparatus (1), the blowing nozzle (160) is completely surrounded by the suction nozzle (100). - Apparatus (1) according to at least one of the preceding claims, characterized in that
the suction nozzle (100) is of flexible form at a free end in order to adapt itself to a surface (52) which surrounds a borehole (50). - Apparatus (1) according to Claim 7, characterized in that,
at the free end, the suction nozzle (100) has a seal (102) for abutment against the surface (52). - Apparatus (1) according to at least one of the preceding claims, characterized in that
the suction nozzle (100) is mounted so as to be displaceable in an axial direction relative to the blowing nozzle (160), and/or is deformable, such that the blowing nozzle (160) can be positioned adapted to a depth of the borehole (50). - Apparatus (1) according to one of the preceding claims, characterized in that
the filter element (12) has a filter housing, a filter insert and a service flap in the filter housing for removal of residues from the filter insert. - Method for cleaning a borehole (50) by means of an apparatus (1) according to at least one of Claims 1 to 10, comprising the following steps:- placing the apparatus (1) in the region of the borehole (50),- swirling up drilling dust situated in the borehole (50) by means of the apparatus (1),- extracting the swirled-up drilling dust by suction from the borehole (50) by means of the apparatus (1).
- Method according to Claim 11, wherein,
during placement of the apparatus (1), the blowing nozzle (160) is pushed into the borehole (50) and the suction nozzle (100) is pressed against a surface (52) around the borehole (50). - Method according to Claim 11 or 12, wherein
the swirling-up of the drilling dust from the borehole (50) by means of the apparatus (1) comprises the following steps:- generating a positive pressure in the form of an air stream by means of the pump (14),- discharging the air stream into the borehole (50) via the outlet channel (16) and the blowing nozzle (160) adjoining the outlet channel (16),- swirling up the drilling dust by way of the air stream introduced and producing a mixture of drilling dust and air. - Method according to Claim 11, 12 or 13, wherein the extracting of the drilling dust by suction from the borehole (50) by means of the apparatus (1) comprises the following steps:- generating a negative pressure by means of the pump (14),- sucking the mixture of drilling dust and air in through the suction nozzle (100) and the intake channel (10) adjoining the suction nozzle (100),- guiding the mixture of drilling dust and air to the filter element (12),- filtering the mixture of drilling dust and air, so that the drilling dust remains in the filter element (12),- sucking in the filtered air upstream of the filter element (12) by means of the pump (14).
- Arrangement comprising a borehole (50) in an object (5) and an apparatus (1) according to at least one of Claims 1 to 10 for cleaning the borehole (50), characterized in that
the blowing nozzle (160) is arranged in or in front of the borehole (50), and the suction nozzle (100) is pressed against a surface (52) of the object (5) around the borehole (50).
Applications Claiming Priority (1)
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DE102019207568.1A DE102019207568B4 (en) | 2019-05-23 | 2019-05-23 | Wellbore cleaning apparatus, method and arrangement |
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EP3741473A1 EP3741473A1 (en) | 2020-11-25 |
EP3741473B1 true EP3741473B1 (en) | 2023-06-07 |
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EP20171562.0A Active EP3741473B1 (en) | 2019-05-23 | 2020-04-27 | Borehole cleaning device, method and assembly |
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DE (1) | DE102019207568B4 (en) |
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CN113385485B (en) * | 2020-12-21 | 2022-07-19 | 衡东辉宏机械制造有限公司 | Pneumatic scrap iron removing device and method for brake master pump cylinder body |
CN113352396B (en) * | 2021-06-02 | 2022-09-02 | 山东华美建材有限公司 | Glass fiber ceiling puncher and processing technology of glass fiber ceiling |
CN114523331B (en) * | 2022-04-02 | 2023-09-01 | 济南新艺粉末冶金有限公司 | Powder metallurgy sprocket processing equipment |
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DE653526C (en) * | 1936-01-16 | 1937-11-26 | Rudolf Battig | Process for rendering the dust harmless from drilling, grinding, polishing or the like |
DE2948006A1 (en) * | 1979-11-29 | 1981-06-04 | Jürgen 4477 Welver Volkmann | METHOD AND DEVICE FOR REMOVING SOLID OR LIQUID RESIDUES FROM CAVITIES LIKE HOLES OR THE LIKE. |
DE29613396U1 (en) * | 1996-08-02 | 1997-01-02 | Bieber, Johann, 86757 Wallerstein | Dowel borehole cleaning device |
DE19757424A1 (en) * | 1997-12-23 | 1999-06-24 | Hilti Ag | Suction brush for cleaning blind anchorage holes drilled in e.g. concrete |
DE10318238B4 (en) * | 2003-04-23 | 2007-02-01 | Robert Bosch Gmbh | Method and device for cleaning internal surfaces of threaded holes |
ES2273587B1 (en) * | 2005-07-29 | 2008-04-16 | Forgestal, S.L. | DEVICE FOR CLEANING UNDER ENVELOPE BLOCKS FOR TUNNEL OVEN VAGONETS. |
DE102007004158B3 (en) * | 2007-01-22 | 2008-07-24 | Hans Georg Kupp | Borehole cleaning device, has suction tube extending along longitudinal axis, and brush whose bristles are arranged in suction tube and inserted in openings such that bristles overlap suction tube outward |
DE202010010848U1 (en) * | 2010-07-30 | 2010-11-04 | Harald Zahn Gmbh | Bohrautomat |
DE102014213089A1 (en) * | 2014-07-04 | 2016-01-07 | Dürr Ecoclean GmbH | Cleaning and / or drying a cavity |
DE102016225015A1 (en) * | 2016-12-14 | 2018-06-14 | Robert Bosch Gmbh | Method for removing drilling dust |
CN106824917A (en) * | 2017-03-16 | 2017-06-13 | 安庆师范大学 | A kind of jet-propelled computer deashing device |
JP6688268B2 (en) * | 2017-09-19 | 2020-04-28 | 株式会社スギノマシン | Foreign substance inspection device and foreign substance inspection method |
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2019
- 2019-05-23 DE DE102019207568.1A patent/DE102019207568B4/en active Active
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DE102019207568A1 (en) | 2020-11-26 |
EP3741473A1 (en) | 2020-11-25 |
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