EP1946854A1 - Procédé et dispositif destinés au nettoyage d'un tuyau - Google Patents

Procédé et dispositif destinés au nettoyage d'un tuyau Download PDF

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Publication number
EP1946854A1
EP1946854A1 EP08100560A EP08100560A EP1946854A1 EP 1946854 A1 EP1946854 A1 EP 1946854A1 EP 08100560 A EP08100560 A EP 08100560A EP 08100560 A EP08100560 A EP 08100560A EP 1946854 A1 EP1946854 A1 EP 1946854A1
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EP
European Patent Office
Prior art keywords
cleaning
pipe
suction
cleaning liquid
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.)
Withdrawn
Application number
EP08100560A
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German (de)
English (en)
Inventor
Hubert Schulte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Airmatic Gesellschaft fur Umwelt und Technik Mbh
Original Assignee
Airmatic Gesellschaft fur Umwelt und Technik Mbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Airmatic Gesellschaft fur Umwelt und Technik Mbh filed Critical Airmatic Gesellschaft fur Umwelt und Technik Mbh
Publication of EP1946854A1 publication Critical patent/EP1946854A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
    • B08B9/0433—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided exclusively with fluid jets as cleaning tools
    • 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
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/049—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes, i.e. self-propelled
    • B08B9/0495—Nozzles propelled by fluid jets

Definitions

  • the invention relates to a method for cleaning a pipe with a cleaning head moved relative to the pipe by applying a cleaning liquid to the pipe wall to be cleaned and removing the used cleaning liquid from the pipe. Furthermore, the invention relates to a device for cleaning a pipe comprising a longitudinally of the pipe relative to this movable cleaning head with at least one nozzle for applying a pressurized cleaning liquid to the pipe wall to be cleaned, a supply pipe with at least one pressure line for supplying the cleaning liquid to Nozzle and a suction pipe with at least one inlet opening for the withdrawal of the discharged cleaning liquid.
  • Such methods and devices for internal and external pipe cleaning are known.
  • a pressurized cleaning liquid is applied via nozzles to the surfaces to be cleaned.
  • DE 400 011 a pipe cleaning device which has moved forward by pressurized water and powered tools.
  • DE 44 11 039 A1 discloses a pipe cleaning apparatus having a pipe cleaning head which rotates along the inner wall of a pipe.
  • DE 199 13 728 C1 describes a pipe cleaning nozzle, wherein the removal of deposits in a pipe is achieved by obliquely backward nozzles.
  • DE 19 61 459 A there is disclosed a pipe cleaning apparatus which provides a suction space between two spaced-apart wall disks, means being provided which generate a vortex.
  • DE 197 03 317 A1 describes a pipe cleaning device comprising a hollow body as a cleaning head with nozzles from which a high-pressure liquid meets the pipe wall to be cleaned; inclined nozzles cause in the pipe a propulsion of the hollow body.
  • the invention has for its object to propose a method for cleaning a pipe and a pipe cleaning device, with each of which the cleaning of a pipe can be performed efficiently in terms of consumption of cleaning fluid and cleaning quality. Furthermore, the invention should lead to a time-saving pipe cleaning.
  • the method-related object is achieved by an aforementioned, generic method in which the cleaning liquid high pressure exits from the cleaning head, at the same time aspirated with the application of the cleaning liquid, the discharged cleaning liquid with the dissolved particles from the pipe wall is and in which the dispensing and the suction of the cleaning liquid are coordinated so that adjusts an at least partially along the pipe wall to be cleaned along flowing cleaning flow.
  • the device-related object is achieved by a device for cleaning a pipe having the features of claim 5.
  • This method and this device are designed so that the cleaning liquid with the possibly dissolved contaminants directly during or after the deployment of the cleaning effect by irradiating the pipe wall to be cleaned under pressure - ie simultaneously with the discharge of the cleaning liquid - is sucked. Accordingly, the primary cleaning process and the removal of the dirty cleaning liquid with the possibly dissolved contaminants done in a single operation. This has the advantage that no liquids, at least no appreciable amount leak out or remain in the pipeline.
  • the simultaneous withdrawal of the soiled cleaning liquid is used for an additional cleaning step. Therefore, the deduction of the dirty cleaning liquid is designed so that it is guided with high energy along the wall of the pipe to be cleaned.
  • the particles of dirt dissolved by the pressure jet buffer layer from the pipe wall act as an abrasive additive added to the cleaning liquid.
  • the cleaning liquid flow adjusting itself through the coordination of detergent application and extraction becomes a high-energy flow along a section of the pipe wall to be cleaned, whereby the cleaning effect is considerably improved.
  • the volume flow of the soiled cleaning liquid during the withdrawal is so guided is that this is accelerated in an annular region along the wall of the pipe to be cleaned and reaches the highest possible speed.
  • This is achieved by the fact that the flow path, which leads from the pressure nozzles to the trigger for the dirty cleaning liquid is blocked by an annular body whose radial extent extends into the region of the wall of the pipe to be cleaned. Accordingly, located between the annular body and the wall of the pipe to be cleaned only a small free area in the sense of an annular Absaugspalts through which the soiled cleaning liquid is withdrawn at high speed.
  • the deduction is carried out by means of a suction pipe to which the vacuum required for this purpose is placed.
  • the negative pressure is built up, for example, by a suction fan producing a large air flow, wherein the suction fan can be arranged in the supply pipe or in the outer region.
  • the suction pipe can be made arbitrarily long or connected to a suction hose.
  • the invention is characterized - as already explained above - by the fact that the withdrawal of the dirty cleaning liquid generates an additional cleaning effect.
  • This is particularly preferably used for pre-cleaning when the inlet opening to the suction pipe in the feed direction in front of the at least one nozzle for ejecting or for discharging the cleaning liquid is on the wall of the pipe to be cleaned.
  • the drive can be effected for movement in the feed direction by means of the recoil of the ejected from the nozzle or the cleaning liquid.
  • at least individual nozzles have a corresponding oblique position or are designed to be pivotable.
  • the pipe cleaning device may have a separate drive unit for moving the cleaning head relative to the pipe.
  • a flow roller is formed, starting from the region of the nozzles initially in the feed direction generates a flow along the wall of the pipe to be cleaned. This is at least in the partial areas with a small cross-section, that is, in particular in the annular suction, sufficiently fast, so that in particular the entrained by the cleaning fluid dirt particles unfold their abrasive and therefore also cleansing effect.
  • the previously described as pre-cleaning in a reverse arrangement of the outlet nozzle and suction opening relative to the direction of movement of the cleaning head may also be provided as a post-cleaning.
  • the radially outer regions of the annular body are designed so that a flow-optimized, annular suction gap is formed.
  • a convergent region is applied, followed by a bottleneck, which in turn follows a divergent region in the further flow path.
  • the shape of a Laval nozzle is preferred for an axial section through the annular suction gap.
  • a front part of the cleaning head is designed so that a negative pressure is built up in the inlet opening to the suction pipe, which is guided to the downstream side at the annular suction gap.
  • a front component is used for a preferred design, which is adapted to the contour of the wall of the pipe to be cleaned and rests against this wall or forms a limited front gap to this wall. Accordingly, the front component limits the inflow of fluid from the upstream regions of the pipe to be cleaned to the inlet opening on the intake manifold. Accordingly, it is preferable to make the front gap formed by the front member smaller than the annular suction gap formed by the annular body.
  • a plurality of nozzles for discharging the high-pressure cleaning liquid are provided with the same angular distance from each other.
  • the nozzles can sit on a rotating nozzle ring which rotates about the longitudinal axis of the cleaning head.
  • the nozzle ring can be set in rotary motion by the pressure applied by the cleaning agent or it can also have an independent drive.
  • the cleaning head has two spaced suction openings, between which the cleaning liquid is preferably applied via a plurality of nozzles.
  • a cleaning liquid flow adjusts to both suction openings.
  • a centering device is provided for the cleaning device according to the invention. This serves to essentially maintain the radial distance in the suction gap (s) and to avoid vibrations which may occur in the event of fluctuations in the dynamic pressure reduced by the fluid acceleration, in particular in the annular suction gap.
  • passive spacers are provided, which may be, for example, radially extending, at least partially elastic slats, which are supported against the wall of the pipe to be cleaned. These passive spacers may be provided along the outer circumference of the annular body and / or the front member. Alternatively, the desired passive centering can be effected by a very precisely fitting design of the front component.
  • an active centering device can be used, for which the distance to the wall of the pipe to be cleaned is measured by means of sensors and actuator devices are provided which serve for centering. This can in turn be effected by mechanical adjusting elements or by a corresponding control or regulation of the discharge of the cleaning liquid through the nozzles.
  • a sensor-actuator arrangement comprises a suitable control or regulating device.
  • the radial extent of the annular body adaptable to form the annular suction gap and / or the front component for the front gap.
  • foldable is conceivable or elastically deformable structures, for example, the radial extent of these components can be changed by pressurizing membranes arranged along their outer circumference.
  • FIG. 1 a first embodiment of a cleaning device 1 according to the invention is shown as an axial section.
  • This comprises a cleaning head 15 and a supply pipe 3 connected to it.
  • the other devices for operating the cleaning device 1, such as a high-pressure pump for providing the required cleaning liquid and a suction device are not shown in the figures.
  • the cleaning head 15 moves in the pipe 12 to be cleaned by an external drive, not shown in detail, or by means of the recoil, which is caused by the liquid ejection inclined nozzle 11.
  • the position of the nozzles 12 with respect to the surface to be cleaned to achieve the desired cleaning result is arbitrary.
  • the cleaning head 15 comprises the already mentioned nozzles 11, the To serve the ejection of the pressurized cleaning fluid. These are charged via individual pressure lines 18 which are received in the supply pipe 3, with cleaning liquid. In the pressure lines 18, the cleaning liquid is at high pressure. Thus, the cleaning liquid exits from the nozzles 11 at high pressure and thus with high kinetic energy. Instead of providing individual, with the same angular distance from each other arranged nozzles 11, as shown in the illustrated embodiment, this may also be an annular nozzle. The pressure line can then be an annular feed line.
  • At least one nozzle 11 is used, preferably a plurality of nozzles 11 are arranged on a nozzle holder ring 4.
  • This nozzle retaining ring 4 as provided in the illustrated embodiment, be formed fixed and thus be integrally formed with the other components of the cleaning head 15.
  • the nozzle retaining ring 4 is designed to be rotatable so that it can be made to rotate relative to the remainder of the cleaning head 15 about its longitudinal axis 25. To drive this rotation, the nozzles 11 may be inclined in the plane of rotation against the radial direction.
  • rotary feedthroughs are provided with suitable seals.
  • a rearward inclination of the nozzles 11 in the plane of the axial section causes a recoil, which serves for the propulsion of the cleaning head 15.
  • the nozzles 11 may be adjustable. This relates to their directional orientation and / or an adjustment possibility of the flow cross-section or the flow resistance for the cleaning fluid.
  • the cleaning head 15 comprises in the feed direction shown in the figures 24 in front of the nozzles 11, an annular body 5, which is radially so large that an annular Absaugspalt 9 between the radially outer end of the body 5 and the inner wall 28 of the tube 12 is formed by when the polluted cleaning liquid a high flow velocity along a portion of the wall 28 of the pipe to be cleaned 12 is formed.
  • the annular body 5 is applied rotationally symmetrical and is connected as a fixed component with the other components of the cleaning head. It is possible that along the outer circumference of the annular body 5 radially outwardly spaced spacer elements are arranged.
  • a front member 6 which covers the suction tube interior 8 in the sense of a rotationally symmetrical shield and forms part of the side wall of the inlet opening 19 to the supply pipe 3.
  • the front component 6 serves to delimit this inlet opening 19 from the region of the pipe 12 to be cleaned in front of the cleaning head 15 in the feed direction. Accordingly, a front gap 10 is formed between the front component 6 and the wall of the pipe 12 to be cleaned. such that a negative pressure air volume flow 2 conveyed through the suction pipe 7 draws off a large volume of liquid from the dirty cleaning liquid and results in high flow velocities in the suction gap 9. If the tube region located upstream in the cleaning head 5 and thus the front component 6 is filled with a gaseous medium, this occurs at high speed through the front gap 10 and entrains the dirty cleaning liquid flowing in via the suction gap 9.
  • the front gap 10 has a smaller width than the suction gap 9.
  • the choice of setting results from the dimensional accuracy of the tube and the type of contamination.
  • the radial extent of the suction gap is selected from the interval of 1 to 5 mm.
  • its radial extent is set in the range of 0.1 to 2 mm.
  • these components may have some elastic deformability or elastic lips or the like, so that an adaptation to unevenness or greater contamination is possible.
  • the jacket areas swept over by the soiled cleaning fluid are designed with optimized flow. These are preferably cross sections in the form of Laval nozzles. Accordingly, as seen in the flow direction, the suction gap 9 initially has a convergent first partial area in which the soiled cleaning solution is accelerated. This is followed in the flow direction by a constriction, in which the minimum free flow cross-section of Absaugspalts 9 is set. After the constriction, the suction gap 9 opens to an annular suction chamber 13, in which the radial extent of the annular body 5 continuously decreases. In this annular suction chamber 13, the front gap 10, which opens for the in FIG.
  • FIG. 1 embodiment shown also has a cross-section in the form of a Laval nozzle. It should be noted that due to the entry of the rapidly flowing, preferably gaseous medium, which passes through the front gap 10, a mixed phase in the annular suction chamber 13 is formed, in this area, the speed of the fluid portion, ie the dirty cleaning liquid is increased again.
  • an embodiment is preferred for which the actual inlet opening 19, which adjoins the annular suction chamber 13 radially inward, likewise has a cross-sectional profile in the form of a Laval nozzle.
  • FIG. 1 sketched a second constriction 17 in the inlet opening 19.
  • an inlet opening 19, which in addition to the radially inwardly directed extension has an axial direction component. This leads to an inclination of the inlet opening 19 against the feed direction 24, otherwise the inlet opening 19 is formed rotationally symmetrical to the longitudinal axis 25.
  • FIG. 1 a mechanical connection of the front member 6 with the annular body 5 in the form of webs 14, wherein in the interstices between the webs 14, the inflow of the suctioned cleaning liquid to the intake manifold interior 8 takes place.
  • FIG. 2 the cleaning effect can be seen by the guidance and acceleration of the dirty cleaning fluid.
  • Shown is a current thread to illustrate the developing flow roll 26, which shows that the cleaning liquid initially exerted high pressure exits the nozzle 11 and is guided against the wall 28 of the pipe 12 to be cleaned. Due to the high energetic loading of the inner wall 28 of the tube 12 by the impact of the cleaning liquid contaminants are released from the wall 28. Simultaneously with the dispensing of the cleaning liquid, the suction of the cleaning device is operated so that the in FIG. 2 schematically illustrated flow roll 26 forms. The formation of the flow roll 26 in the form shown results from the formation of the annular body or between the latter and the wall 28 of the pipe located Absaugspaltes 9.
  • the flow roll 26 is an annular body, which, as in FIG. 2 can be seen along a portion of the inner wall 28 of the tube 12 flows past.
  • the front component 6 largely closes off the suction tube interior 8, so that the vacuum required to generate the flow roller 26 sets in the region of the suction gap 9 as a result of the operation of the suction device connected to the suction tube 7.
  • the flow roller 26 is formed, which then flows past as a high-energy flow at a portion of the wall 28 of the pipe to be cleaned. Due to the shown feed direction 24 in FIG. 2 works the flow direction of the flow roller 26 in the feed direction and causes an effective pre-cleaning of the pipe wall to be cleaned, in particular also by the fact that the flow roller contains an abrasive additive by the detached from the pipe wall dirt particles.
  • a swirl chamber 16 in which the flow roll 26 is at least partially swirled, in order in this way in the flow direction of the cleaning liquid downstream of the nozzle outlet 11 to generate turbulence by turbulence within the flow roll 26.
  • This improves the cleaning effect.
  • Absaugspaltes 9 the cleaning liquid is accelerated with the already dissolved dirt particles to give rise to the desired high-energy flow roller 26, with the result that emerging from the nozzle 11 Cleaning liquid in the rearward pipe interior is not or only very subordinate occurs.
  • the exit angle of the cleaning liquid is inclined in the direction of the suction gap 9 and the cleaning liquid thus impinges on the wall 28 of the tube 12 at a certain angle.
  • the polluted cleaning liquid sucked through the suction gap 9 enters through the inlet opening 19 into the suction tube interior 8 of the suction tube 7 and is drawn off by this.
  • FIG. 3 shows in a further development, a further cleaning device 1 ', in which the formation of two series-connected and opposite directions against each other flowing flow rollers is provided.
  • the cleaning head 15 'of this embodiment has the same elements as the cleaning head 15 of Figures 1 and 2 for forming a flow roller upstream of the nozzles 11 'in the feed direction.
  • the same components are in the cleaning device 1 'and the cleaning head 15' therefore with the same reference numerals as for the cleaning head 15, supplemented by an "apostrophe", characterized.
  • suction device In addition to this first, generally referred to as suction device has the cleaning head 15 'via a second, in the feed direction the nozzles 11' downstream suction device.
  • a second suction gap 22 is formed with a limited radial extent to the wall of the pipe 12 to be cleaned.
  • a rear-side component 23 is provided, which in turn serves to seal off the further pipe region and forms only a very narrow, second, rear-side gap 27 towards the wall of the pipe 12 to be cleaned.
  • an embodiment of the second suction gap 22, the second rear gap 27 and the second inlet opening 20 with a cross-sectional profile in the form of a Laval nozzle is preferred.
  • a plurality of nozzle rings can be used with axial spacing, wherein at least one of the nozzle rings is associated with the upstream in the feed direction deduction for the dirty cleaning liquid.
  • the cleaning head would in such an embodiment of its drive within the tube in the opposite direction, as shown in these figures, are moved.
  • a braking device To control the speed of movement of the cleaning head in the tube can serve a braking device.
  • a movement of the cleaning head within the tube can be carried out by appropriately controlling the flow velocity of the flow rolls. If the flow velocity in the two forming flow rolls is the same, the drive head of the cleaning head moves in this way this opposite the pipe to be cleaned. By changing the flow velocity in the two flow rolls, the cleaning head can be moved in one or the other direction.
  • the claimed cleaning device has been described in the figures using a cleaning head for internal cleaning of pipes.
  • the cleaning device can equally be used to clean the outer wall of a pipe.
  • the parts relevant to the cleaning heads described include concentrically the pipe to be cleaned.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
EP08100560A 2007-01-17 2008-01-16 Procédé et dispositif destinés au nettoyage d'un tuyau Withdrawn EP1946854A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710002526 DE102007002526A1 (de) 2007-01-17 2007-01-17 Vorrichtung zur Rohrreinigung mit Hochdruck-Vakuum-Technik

Publications (1)

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EP1946854A1 true EP1946854A1 (fr) 2008-07-23

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EP08100560A Withdrawn EP1946854A1 (fr) 2007-01-17 2008-01-16 Procédé et dispositif destinés au nettoyage d'un tuyau

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106975641A (zh) * 2017-03-29 2017-07-25 成都理工大学 一种多功能仿生清管器及其清洁方法
CN108262315A (zh) * 2018-03-27 2018-07-10 曾域广 管道行走清污机器人
CN114007769A (zh) * 2019-06-25 2022-02-01 维他宝石有限公司 用于饮用吸管的清洁装置
CN114247709A (zh) * 2021-11-15 2022-03-29 北京机械设备研究所 一种清洗管路装置
CN114749436A (zh) * 2022-04-12 2022-07-15 华能国际电力股份有限公司河北清洁能源分公司 一种管路原件表面油污清理装置及其清理方法
CN114833146A (zh) * 2021-02-01 2022-08-02 中国石油天然气股份有限公司 油管内壁清洁装置和清洁方法
CN115055453A (zh) * 2022-06-15 2022-09-16 石家庄铁道大学 人造龙卷风利匕复合式非开挖多级清管装置及其清管方法
CN115889361A (zh) * 2022-10-19 2023-04-04 重庆中烟工业有限责任公司 一种管道清理装置
CN116967224A (zh) * 2023-09-22 2023-10-31 江苏恒博气力输送设备制造有限公司 一种气力输送管道远程清洁装置

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DE102009026039A1 (de) 2009-06-25 2010-12-30 Thomas Pfalz Reinigungs- und Desinfektionssystem für Rohre, Schläuche und Behälter und dazugehörige Verfahren
DE102011120913B4 (de) 2011-08-13 2018-04-05 Clemens Ening Vorrichtung zur erleichterten und hygienischen Reinigung von einem Abwasser führenden Rohr

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DE400011C (de) 1923-03-28 1924-08-11 Gustav O A Liebau Dipl Ing Rohrreinigungsvorrichtung mit durch Druckwasser vorwaerts bewegten und angetriebenen Werkzeugen
DE1961459A1 (de) 1968-12-09 1970-06-18 Rene Michel Reinigungsvorrichtung fuer industrielle Leitungen und Kanaele
DE4237352A1 (de) 1992-11-05 1994-05-11 Hydac Technology Gmbh Rohrreinigungsgerät
DE4411039A1 (de) 1993-04-08 1994-10-13 Mitsui Deutz Diesel Engine Co Rohrreinigungsvorrichtung
EP0623396A1 (fr) 1993-05-04 1994-11-09 Friedhelm Ehle Dispositif de nettoyage des égouts ou des conduits
DE4317409A1 (de) * 1993-05-18 1994-11-24 Hammonia Apparatebau Kroenke G Einrichtung zur Reinigung von Abwasserkanälen
DE29622088U1 (de) 1996-12-19 1998-04-16 Kipp Jens Werner Strahlvorrichtung
DE19703317A1 (de) 1997-01-30 1998-08-06 Lufthansa Technik Ag Verfahren und Vorrichtung zur Reinigung von Rohrleitungen
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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106975641B (zh) * 2017-03-29 2023-02-21 成都理工大学 一种多功能仿生清管器及其清洁方法
CN106975641A (zh) * 2017-03-29 2017-07-25 成都理工大学 一种多功能仿生清管器及其清洁方法
CN108262315A (zh) * 2018-03-27 2018-07-10 曾域广 管道行走清污机器人
CN114007769A (zh) * 2019-06-25 2022-02-01 维他宝石有限公司 用于饮用吸管的清洁装置
CN114007769B (zh) * 2019-06-25 2024-01-12 维他宝石有限公司 用于饮用吸管的清洁装置
US11883861B2 (en) 2019-06-25 2024-01-30 Vitajuwel Gmbh Cleaning device for a drinking straw
CN114833146A (zh) * 2021-02-01 2022-08-02 中国石油天然气股份有限公司 油管内壁清洁装置和清洁方法
CN114247709A (zh) * 2021-11-15 2022-03-29 北京机械设备研究所 一种清洗管路装置
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CN115055453A (zh) * 2022-06-15 2022-09-16 石家庄铁道大学 人造龙卷风利匕复合式非开挖多级清管装置及其清管方法
CN115055453B (zh) * 2022-06-15 2023-04-25 石家庄铁道大学 人造龙卷风利匕复合式非开挖多级清管装置及其清管方法
WO2023241325A1 (fr) * 2022-06-15 2023-12-21 石家庄铁道大学 Dispositif de nettoyage de tuyau à étages multiples sans tranchée composite à lames affûtées et tornade artificielle et procédé de nettoyage de tuyau correspondant
CN115889361A (zh) * 2022-10-19 2023-04-04 重庆中烟工业有限责任公司 一种管道清理装置
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CN116967224A (zh) * 2023-09-22 2023-10-31 江苏恒博气力输送设备制造有限公司 一种气力输送管道远程清洁装置

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