• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a device for cleaning pipes (1) with a substantially circular cross-section, the device (2) comprising a milling head (4) which, when the milling head (4) rotates in operation about its longitudinal axis (X), fits within the inner diameter (d) of the pipe (1) ), wherein the milling head (4) is further arranged to be fed forward inside the pipe (1) in a cleaning direction (R) parallel to the longitudinal direction (L) of the pipe (1) and with the longitudinal axis (L) of the milling head (4) substantially parallel and concentric with the center line (C) of the tube (1), and wherein the milling head (4) comprises a body (6) and at least three folding-out cutting devices (8, 10, 12, 14) arranged on the body (6), where the cleaning direction (R) The end (16, 18, 20, 22) of the respective fold-out cutting device (8, 10, 12, 14) is arranged so that under the influence of centrifugal force (Fc) generated by rotation the milling head (4) folds out in the direction away from the milling head (4). ) longitudinal axis (X), and where further respective fold-out cutting device g (8, 10, 12, 14) comprises at least one insert (24, 26, 28, 20) in which the folded-out position of the fold-out cutting device (8, 10, 12, 14) is arranged for felling the cleaning direction (R). The invention also relates to the use of a device (2) for cleaning pipes (1) when removing solidified lining (62) inside pipes (1). (Fig. 1)
    公开号:SE1251505A1
    申请号:SE1251505
    申请日:2012-12-21
    公开日:2014-06-22
    发明作者:Ulf Englund；Sven Rydman
    申请人:
    IPC主号:
    专利说明:

    The inner wall of the 3G in this way still placed the fiuvudsakiigen in its extent tit ~ and the opposite casing is inserted into the gamia tube while at the same time turning right gradually so that the outside of the casing gradually extends beyond the iris side of the tube. in this way an irifodririg is obtained from the garnia tube rned a liner tube which after insertion stones, e.g. in the manner mentioned above, and provides a rigid and hard tube-shaped iris liner on the inside of the garnia tube.
    In this way, the probiein of garnia pipes is fixed faster than when no and nåiiet replace the pipes with new ones.
    However, instead of another protniern may arise from the lining of garnia tubes with fiexibia casing tubes, namely that it iioiand arises, usually itaftfviida, spaiter rneiian outside of the casing tube and inside the garnia tube. When stoned, this can be done, for example, by using a drill-like device which twists the still soft and flexible lining into a sniai "stick" which can be pulled out of the gamia tube. It happens, however, that this does not seem to be the case until a stone stick of stoned lining remains in the center of the gamia tube, which is difficult to get to the point, it also happens that the nine only discovers the propiem when the liner is stoned when it is received. an inbuktiting of stoned lining in the tube which must be added to then re-liner this dei of the tube. Removing a steered liner without damaging the inside of the garnish tube is both difficult and time consuming, GB 842332 discloses a tool for radially oriented smoothing of inner walls of inner tubular arms.
    Brief description of the tipping invention The problem of removing obstacles inside the pipe in connection with the renovation of pipes is solved according to the invention by a device for cleaning pipes according to the characterizing part of claim 1. The device that the device for cleaning pipes comprising a milling head also comprises the features that the milling head comprises a large and at least three outer cutting device arranged on the shaft, wherein the end of the respective cutting device arranged in the direction of cleaning is arranged by a central cutting device. rotation of the milling node is carried out in a direction away from the longitudinal axis of the milling node, and where further respective respective cutting device comprises at least one insert which in the outer part of the respective cutting device is arranged for felling in the direction of cleaning, to remove the advantage of irradiation force in the forward direction inside the tube without the removable 77434 10 15 20 25 30 U) the cutting devices being inserted even into the tube preventing the trawl from traveling, which makes it satisfactory to clean large trajectories and relatively quickly the trailing tube travels quickly. ch effectively.
    Furthermore, it is achieved that the respective extensible cutting device comprises at least one insert which in the extensible position of the respective extensible cutting device is arranged for felling in the cleaning direction, the advantage being that the inside of the tube is not harvested so that a rocky liner can be separated from the tube without being separated. important for pipes with already damaged pipe walls. One more brought! is that the removable cutting device is removed from the side and in the inward direction when the longitudinal axis of the milling head is removed when the milling head is pulled back out of the tube, thereby reducing the risk of the milling head getting stuck inside the tube.
    BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be further elucidated with reference to the accompanying drawings, in which: Figure 1 schematically shows a section of a pipe cleaning device according to an embodiment of the invention, and Figure 2 schematically shows a front view of the device according to Figure it.
    Description of Preferred Embodiments The same parts in the various figures are denoted by the same reference numerals.
    Figure 1 schematically shows a section of a device 2 for cleaning pipes according to a guide of the invention, where the device is shown in its detailed operating position inside a pipe 1.
    The device 2 for cleaning pipe 1 is intended for pipe 1 with a vase-like circular cross-section.
    The device 2 comprises a milling node 4 which, when the milling node 4 rotates in operation about its longitudinal axis X, fits within the inner diameter of the pipe'd, where the milling node 4 is further arranged to be fed from the net inside the pipe in a cleaning direction R parallel to the pipe. and with the longitudinal axis X of the milling node 4 substantially aligned parallel and concentric with the center line of the tube (I for removing obstacles in the tube 1. The milling head 4 comprises a body 6 and at least three extensible cutting devices 14 in Figures 1, 1G, 12 The invention is illustrated by an embodiment with four removable cutting devices S, 10, 12, 14, where the removable cutting device "14" is not shown in Figure 1 - for the reference numerals below which are not shown in Figure 1, see Figure 2. the cutting devices 8, 10, 12, 14 are at least three in number, and are preferably arranged symmetrically about the longitudinal axis X of the bevel nozzle 4, in order to reduce shine so that the milling head 4 is inclined in the tube 1 during operation. The end-ordered end in the cleaning direction R 77434 1G 15 20 25 30 16, 18, 2G, 22 of the respective extended arrangement 8, 10, 12, 14 is arranged to, under the influence of one triiugaikrait å; rotated by rotation of the milling head 4 is extended in the direction away from the longitudinal axis X of the milling head 4, and there further the respective removable cutting device 8, 10, 12, 14 comprises at least one insert 24, 26, 28, 30 in the respective removable cutting device 8, 10. , 12, 14 utfäiida iäge är anordnat for avverkning i rensrtingsriktriingert it. preferably this cut 24, 26, 28, 30 is arranged to in the first instance remove obstacles which are close to the inner lining of the retire, e.g. stoned lining sorn is fixed rnot rorets 1 inner wall 3.
    This embodiment storm may develop into an arithmetic of other embodiments including any of the preferred features as set forth below.
    The at least one insert 24, 26, 28, 30 can either be arranged as shown at 24 and the header at 28, i.e. substantially angular right in relation to the longitudinal axis X of the milling head 4 in the outer position of the respective extensible cutting device 8, 10, 12, 14, as shown in dashed lines at 28, i.e. in an acute angle to the milling axis X of the milling head 4, arranged at 24 at the outermost end of the insert more strongly, if arranged as dashed at 28, the outermost end of the notch guides even more closely along the inner wall of the tube 1 in the present invention to be described in more detail. at 24 ocii neidraget at 28.
    The removable cutting devices 8, 10, 12, 14 may, for example, be arranged on the body 4 so that the stones 4 and the removable cutting devices 8, 1G, 12, 14 have reach! 5; 9, ll, 13, 15 (see Figure 2) by means of bumps 17, lä, 21, 23 (see also figure '2) of' arranged to hold the removable splitter arrangements 8, 10, 12, 14 at the stand 4. .
    Preferably, their respective cutting devices 8, 10, 12, 14 comprise at least two inserts 24, 26, 28, 30; 32, 34, 36, 38 as in the position of the respective extensible cutting device 8, 1D, 12, 14 are suitable for felling in the purge ring R, where the outermost insert 24, 26, 28, 30 in the respective extensible edge is seen in the radius direction. The outer position of the cutting device 8, 10, 12, 14 is arranged substantially perpendicular to the axis of the cutting node X and where a radius is seen in front of this outermost insert 24, 26, 28, 30 arranged inner insert 32, 34, 36, 38 in the respective The cutting insert device 8, 10, 12, 14 is arranged in a pointed angle oii * irasnuvodets iängdaxei X. Preferably, in the radius direction, the outermost cut 24, 26, 28, 30 is arranged to cut down obstacles which are close to the rudder. 1 inner surface, tex. stoned liner which is located opposite the inner wall of the tube 1, and preferably it is radially visible inside this outermost insert 24, 26, 28, 30 arranged inner inserts 34, 35, 38 arranged to remove obstacles which are a distance from the inner wall of the tube 1 3, tex. Introduced rocky liner as the outermost insert 24, 26, 28, 3G is detached from the inner wall 3 of the tube 1. 774-34 in 10 15 20 25 30 tr: Preferably, at least one further insert assembly 40 is oriented on the spirit 42 of the assembly 42 provided in the assembly. 6. This cutting device 4-0 also comprises at least one insert 44, but preferably at least two inserts 44, 46 arranged on each side about the longitudinal axis X of the iris body.
    This cutting device 40 removes the obstacles in the pipe 1 which the other sliding devices 8, 1G, 12, 14 do not reach, e.g. fell and finiordeia a srnai stick of steinad iriiodririg in rorets 1 centrum C.
    Preferred fish are the inserts 24, 216, 28, 30, 32, 34, 35, 38, 44, 46 which in different combinations may occur in the iräshuxfiid 4 depending on the number of inserts 24, 26-, 28, 30, 32, 34, 36 , 38, 44, 46 and suppose! expandable cutting devices 8, 1G, 12, 14 are arranged in such a way that in the position of the expandable cutting devices 8, 10, 1.2, 14 the position of rotation of the milling value 4 about its longitudinal axis X moves substantially over the entire cross-sectional area within the inner wall of the tube 1. tube 1.
    Preferably, the respective extensible cutting device S, 10, 12, 14 is further arranged with a guide surface 48, 50, 52, 54 which in the extended position of the respective tactile cutting device 8, 10, 12, 14 is arranged radii r on the respective extensible cutting device S, 10. , 12, 14, which extends parallel to the longitudinal axis X of the milling head 4, and in the direction of rotation of the milling head 4 is adapted to the cranking to have the inner wall 3 of the rod 1, so as to facilitate centering of the milling head 4 in the tube 1. The springs 48, 50, 52, 54 may be provided with friction-lowering means such as, for example, Teiiori. Preferably, the arrangement comprises a drive means 56 below which the iris head 4 is arranged so as to be located within the tube in the direction of purification 4 and is rotated downwards. around its longitudinal axis X, where the drive means S6 is further arranged to be able to accommodate trvcitkrait in its axial direction A Eängs pipe longitudinal direction n t, varigen If the outer cutting devices S, 10, 12, 14 are already out at a rotational speed of about 1900 revolutions per minute, the thrashing head 4 can be rotated at a speed of, for example, at a speed of about 2500-3000 rpm per rniriut to 'sakerstäiia the elaboration of these.
    The drive assembly 56 is preferably a wire or a rod. If wires are used, there are special spuririeri wires that handle large trvcitkraiter without the wire bending in its iangdied. the išrivorgariet, in turn, is preferably operated medeist hydrauiik. For example. For example, a hydraulic pump with variable pressure 'from 0 up to 180 has been used' for the drive, which in turn can, for example, be operated with a combustion engine or a plant. Preferably, the array ring 2 further comprises a sieve 58 for water V arranged around the drive body 56 which is connected to the sieve S8 and water V can be fed to the milling head 4 for cooling the dies during operation and for reducing frictional forces to the wooden snout wall and the wooden snout wall 4. 3 during operation by a lubricating inlet of water v 'extending from the radial ends of the extensible cutting devices S, 10, 12, 14 and the inner wall of the tube Ürn the drive means 56 has a dianieter of e.g. 12 rnrn so can the orngivande siangen tex. have a diameter of 20 nirn.
    Preferably, the respective viewable cutting device å, 1.0, 12, 21.4 in its titular position is arranged in the direction of the longitudinal axis X of the bevel nozzle 4 to extend in its radial direction at least in a section 60 at an angle skiiid from the direction of the longitudinal axis X of the wooden head 4. , whereby the extensible cutting devices 8, 10, 23.2, 14 upon rotation of the frash head 4 inside the tube 1 are arranged to intake away exfentueiit water V andjeil finely divided material from, for example, intrusion ring 62 in the tube 1 away from the milling head 4.
    The respective inserts 24, 26, 223, 30, 32, 34, 36, 38, 44, 46 preferably comprise pointed cutting edges 64, 65, 68, 2G, 22, 24, 76, 78, 80, 82, i.e. rned eggvinkei less than 90 °, ochjeliei 'are coated iieit elier partly with corresponding protruding bodies of hard materiai, the season exernpeivis cutting teeth of Coromant If they in radieii r direction' seen outermost inserts 24, 26, 28, 30 in the respective skaranordnirigarnas 8, 1G, 12, 14 extended positions are arranged substantially perpendicular to the angle of incidence of the milling head 4 of the milling head 4 which is radiiit r seen within these outermost inserts 24, 26, 28, 3G arrayed inner inserts 32, 34, 36, 33 of the respective cutting arrangement. are located in a pointed angle n to the longitudinal axis X of the iris head 4, so for pasta results positive inserts with a larger sap opening angle can be seen at the outermost cuts 24, 26, 28, 30 in the radius direction than at the inner cuts 32, 34, 36, 38 is used, the outer inserts 24, 26, 28, 3D are loaded by substantially axial X forces while the inner inserts are loaded by both axial X and radial forces. For example. the opening corners can be of size 5 "resp. l0 °.
    Preferably, an outermost insert 24, 25, 28, 30 in the radial direction is to extend in the radial direction r with a distance s corresponding to the thickness of the liner in the extended position of the respective cutting device 8, 10, 12, 14 when using the device. 2 to remove stoned infociring 62 from the inside of a pipe 1. Other obstacles such as, for example, roots or solidified concrete, etc. can also be removed from the pipe at the same time. the figure also shows the outer wall 84 of the tube, and the outer diameter D of the tube D. 774-34 1G 20 In order for the milling node 4, when rotating in operation about its longitudinal axis X, to intersect within the inner tube of the tube 1, the respective cutting device S, 10, 12, 14 are preferably arranged below a respective stopping surface S0, 88, 90, 92 soni in the respective extending surfaces 8, 10, 12, 14 are arranged to form: note and non-corresponding stopping surface 94, 96, 98, 190 on stornnieri 4 and therein, in addition, further elaboration of the respective shear arrangements 8, 10, 12, 14. In this way, the diameter of the milling head in radiii r ied exernpeivis can be limited to any eiier a few rnni niindre than the inner diameter of the rudder 1 d. i-iäiiviisriingstriing; 92; 96 and 100 are not shown in the figures but indicate those of extensible core arrays 1G, 14 and 14, respectively. nus 6 son: rnotsvarar 'de rned Henvisningsbeteckiiirtgarna 86; 90; 94, 98 marked the parts of elaborate skaranordiiiiigar 8, 12 resp. nns G.
    Figure 2 schematically shows a front view of the device according to Figure 1. The figure shows the stones 4 and thereon arranged expandable cutting device rings 8, 1G, 12, 14, especially inserts 24, 26, 28, 30, 32, 34, 36, 38, 44 , 46 with pointed siren edges 54, 66, 58, 70, .72_, 74-, 26, 78, SO, 82 arranged for the rotation direction marked in the figure to the milling level 4. in the figure the direction of rotation is assumed to be slightly seen in the longitudinal axis of the milling node 4. In the direction of rotation, the direction of rotation may also be to the left in the position of the seat adapted to the response. the figure shows a viewing device in which the removable cutting devices 8, 19, 12, 14 are arranged on the grooves 4 in that the body 4 and the removable cutting devices 8, 1.0, 12, 1.4 have a reach 5; 9, 11, 1.3, 15 through which huits 1 , 1.53, 21, 2.3 are arranged so as to reach the removable cutting devices 8, 1G, 12, 14 at the body 4, in which the pieces are locked with locking pins, the iauithtivudet is preferably arranged in the direction of rotation to of the trasnuvidid 4 for adjusting the locking pins.
    The invention also relates to the use of a device 2 for cleaning pipe 1 when removing stoned intrusion 62 inside pipe 1. Preferably one in radius is then used !! In the direction of the outermost inserts 24, 25, 28, 31) which are arranged to extend in the radius in the direction r with a distance corresponding to the thickness of the inode ring 62 in the respective cut-off device S, 1G, 12, 14. 77434
    权利要求:
    Claims (1)
    [1]
    Device for cleaning pipes (1) with vasentiigeit circular cross-section, wherein devices: (2) comprise a milling head (4) which when the milling head (4) rotates in operation about its longitudinal axis (X) the inner diameters of the tube (d) are accommodated, where the iris nut (4) is further anerdriat that during rotation of the same is fed forward inside the tube (1) in a cleaning direction (R) oaraiieii rned the tube (1) in the longitudinal direction (t) and with the iris nut (fi) The axis (X) is substantially aligned and concentric with the center line (C) of the tube (1), characterized in that the wood head (fi) comprises a magnifier (6) and at least three titrable cutting devices (8) arranged on the magnifier (5). , 12, 14), where the end (15, 18, 20, 22) of the respective clearance arrangement (8, 10, 12, 14) arranged in the cleaning direction (R) is arranged so that the effect of centrifugation (FC) aistrad genorn rotation of the iris head (4) is extended in the direction away from the longitudinal axis of the head (4). (X), and there * further the respective removable cutting device (3, 10, 12, 14) comprises at least one insert (24, 26, 28, 30) which in the surface of the respective removable cutting device (S, 10, 12, 14) is ariordriat for felling in the clearing direction (R). Device for cleaning pipes (1) according to claim 1, characterized in that the respective removable cutting device (8, 10, 12, 14) incorporates at least two inserts (24, 26, 28, 30; 32, 34, 3: 5, 38 ) sorn in the respective removable cutting device direction (S, 10, 12, 14) utiäiida iage are instaiida for felling in the clearing direction direction (ii), where in the radiusii (r) direction seen the outermost insert (24, 26, 28, 30) in the respective utiäiibara skäranordnirigens (S, 10, 12, 14) utiäiicia iäge är ariordriat vasentiigen vinkeirätti iöriiåiiaride tiii iräsiiuvtidets (4) iängdaxei (X) or: ii where a radieiit (r) seen inside this outermost insert (24, 26, 28, 30) The inner insert (32, 34, 36, 38) of the respective removable cutting device (S, 10, 12, 14) is arranged in a pointed angle (a) to the axis of the trash head (4) (X). Device for cleaning pipes' (1) according to one of the preceding claims, characterized in that a further cutting device (40) is arranged on the end (42) of the storm (6) arranged in the direction of cleaning (R). Device for cleaning pipes (1) according to claim 3, characterized in that the inserts of the milling head (4) are arranged in such a way that in the outer diameter of the tubes (S, 10, 12, 14) in the direction of rotation of the irisiiuxfuriet (li) about its iärigdaxei (X) tiiisarnnians moves substantially over neia cross-sectional surface within the inner cradle (3) of the tube (1) nos the tube (1). Device for cleaning pipes (1) according to one of the preceding claims, characterized in that the respective Litfäiibar 'joint device (S, li), 12, 14) is arranged with a guide surface (48, 50, 52, 54) which in the respective utiäiibara skâiranördningerts (S, 10, 12, 14) utiäiida iäge är arranged radieiit (r) på respective utiäiitiara cutting device (8, 10, 12, 14), where extending paraiieilt: down the milling axis (4) iängdaxei (X), and in the direction of rotation (co) of the wood nozzle (4) is adapted to the cranking of the inner wall (3) of the tube (1), in order to facilitate the centering of the wood nozzle (48, S0, 52, 54) in the center of the wood nozzle (4) in the tube (1). Device for cleaning pipes (1) according to any one of the preceding claims, characterized in that the device (2) comprises a drive means (55) while the travel shortening time (4) is arranged to be able to be fed forward inside the pipe (1) in a cleaning drawing (R ) and by means of the wooden novelty (4) is arranged to be rotatable about its axis (X), where the drive assembly (56) is further arranged to be able to receive thrust in its axial direction (A) along the longitudinal direction (L) of the tube (1), whereby a nitriding force (FW) can be applied to the milling nose (4) in the longitudinal direction (L) of the tube (1). Device for cleaning pipes (1) according to claim 6, characterized in that the drive means (55) is a wire or a rod. Device for cleaning pipes (1) according to claim 5 or 7, characterized in! of, that the ear member (55) in turn is driven inedeist iiydratiiik. Device for cleaning pipes (1) according to any one of claims 6-8, characterized in that the device (2) comprises a sieve (58) for water (V) arranged around the drive means (55) including water (58). V) kan iecias tiii fräsiitivuöet (4) li) 15 20 25 30 10. ll. 12, 13. 14. 77434 10 for reducing the same uride operation and for reducing frictional forces in the wood snout (4) and the inner wall (3) of the tube (1) during operation. Device for cleaning pipes (1) according to one of the preceding claims, characterized in that the respective extensible cutting device (S, 10, 12, 14) is arranged in its extensible position in the direction of the longitudinal axis (X) of the bevel nozzle (4) in its radius (r) direction at least in a deisection (60) at an angle skiijd from the direction of the longitudinal axis (X) of the frame head (4), whereby the removable cutting devices (8, 1G, 12, 14) upon rotation of the iris head ( 4) inside the pipe (1) are arranged to niata away any water oeii / eiier 'finiördeiat matter! away from the milling head (4). Device for cleaning pipes' (1) according to one of the preceding claims, characterized in that the respective inserts (24, 26, 28, 3G, 32, 34, 36, 38, 44, 46) comprise pointed cutting edges (54, 55 , 68, 79, 22, 74, 76, 78, 80, 82). Device for cleaning pipes (1) according to one of the preceding claims, characterized in that the respective removable cutting device (S, 10, 12, 14) is provided with a respective stop surface (86, 88, 9G, 92) which in the respective outlet The viewing position of the cutting device (8, 10, 12, 14) is arranged to abut against the respective corresponding stop surface (94, 96, 98, 100) on the body (4) and thereby allow further design of the respective cutting devices (S, 10, 12, 14), whereby the anaxirnaia diameter of the irasnude (4) radiii (r) ied is limited to less than the inner diameter (d) of the tube (1) so that the fracture head (4) as it rotates in operation about its longitudinal axis (X) is accommodated within the tube (1) inner diameter (d) Use of a device (2) according to any one of claims 1-12 for the removal of stoned intrusion (62) inside pipes (1). Use of a device (2) for cleaning pipes (1) according to claim 133, characterized in that an outermost cut (24, 26, 28, 30) seen in the direction of radius (r) which is arranged to extend in the direction of radius (r) with a distance corresponding to the thickness (t) of the intodria (62) in the extended position of the respective outer cutting device (S, 10, 12, 14).
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    同族专利:
    公开号 | 公开日
    EP2934774A1|2015-10-28|
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    EP2934774B1|2020-01-22|
    EP2934774A4|2016-08-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB191115184A|
    GB191509368A|1914-09-16|1916-03-16|Heinrich Baschy|Improved Apparatus for Cleaning Metal Walls, Tubes, Floors and the like.|
    US1926231A|1931-11-02|1933-09-12|Ernst William|Tube cleaner|
    GB636687A|1947-05-10|1950-05-03|Gen Descaling Co Ltd|A device for removing deposit from the internal walls of pipes and the like|
    US2500238A|1947-07-29|1950-03-14|Elliott Co|Rotary expansible descaler for boiler tubes and the like|
    GB842332A|1957-03-26|1960-07-27|James Victor Ronaldson|Tools for the abrasive treatment of the interior of hollow bodies|
    US4181998A|1978-08-01|1980-01-08|Carrier Corporation|Tube cleaning apparatus|
    GB9822066D0|1998-10-09|1998-12-02|Head Philip|Cleaning apparatus|
    CH693588A5|1999-02-18|2003-10-31|A & B Buersten Technik Ag|Trolley for pressure cleaning of piping has reel to hold pressure hose connected to pressurized water source and having brush on outlet end|JP6869162B2|2017-10-12|2021-05-12|日立造船株式会社|Cleaning mechanism|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1251505A|SE537023C2|2012-12-21|2012-12-21|Device for cleaning pipes|SE1251505A| SE537023C2|2012-12-21|2012-12-21|Device for cleaning pipes|
    EP13865432.2A| EP2934774B1|2012-12-21|2013-12-18|Device for cleaning of pipes|
    PCT/SE2013/051560| WO2014098754A1|2012-12-21|2013-12-18|Device for cleaning of pipes|
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