EP1050348A2 - Dispositif pour nettoyer des surfaces - Google Patents

Dispositif pour nettoyer des surfaces Download PDF

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Publication number
EP1050348A2
EP1050348A2 EP00108295A EP00108295A EP1050348A2 EP 1050348 A2 EP1050348 A2 EP 1050348A2 EP 00108295 A EP00108295 A EP 00108295A EP 00108295 A EP00108295 A EP 00108295A EP 1050348 A2 EP1050348 A2 EP 1050348A2
Authority
EP
European Patent Office
Prior art keywords
bristles
brush
particles
cleaning
rotation
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Withdrawn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
EP00108295A
Other languages
German (de)
English (en)
Other versions
EP1050348A3 (fr
Inventor
Claus G. Wandres
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.)
Wandres GmbH Micro Cleaning
Original Assignee
Wandres GmbH Micro Cleaning
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 Wandres GmbH Micro Cleaning filed Critical Wandres GmbH Micro Cleaning
Publication of EP1050348A2 publication Critical patent/EP1050348A2/fr
Publication of EP1050348A3 publication Critical patent/EP1050348A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B17/00—Accessories for brushes
    • A46B17/06—Devices for cleaning brushes after use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
    • B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
    • B08B1/34—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members rotating about an axis parallel to the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/50—Cleaning by methods involving the use of tools involving cleaning of the cleaning members
    • B08B1/52—Cleaning by methods involving the use of tools involving cleaning of the cleaning members using fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/50—Cleaning by methods involving the use of tools involving cleaning of the cleaning members
    • B08B1/54—Cleaning by methods involving the use of tools involving cleaning of the cleaning members using mechanical tools
    • 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

Definitions

  • the invention relates to a device for cleaning surfaces, for example on plates, foils, laminates, glass plates, plastic, Metal parts, etc., with at least one with bristles, in particular powered cleaning device, which at least is convexly curved in some areas, for example with a Brush roller, pot brush or with an upper run and one Linear brush with a lower strand, the convex area of which on the pulleys and with a device for removal of those picked up by the cleaning device and its bristles Particles, which facility outside the cleaning area and preferably in a convex area of the cleaning device is effective.
  • powered cleaning device which at least is convexly curved in some areas, for example with a Brush roller, pot brush or with an upper run and one Linear brush with a lower strand, the convex area of which on the pulleys and with a device for removal of those picked up by the cleaning device and its bristles Particles, which facility outside the cleaning area and preferably in a convex area of the cleaning device is
  • Such a cleaning device is for example from DE 196 80 007 C1 and from DB 42 13 342 A1, Figure 3 and from DE 196 24 902 known.
  • a cleaning device is for example from DE 196 80 007 C1 and from DB 42 13 342 A1, Figure 3 and from DE 196 24 902 known.
  • these previously known Devices are located on the brush surfaces between the Bristle particles, regardless of whether linear brushes or Brush rollers or other rotatable busts are used. Due to such deposited particles, the cleaning effect of the brush-shaped cleaning equipment after and it's therefore under other from DE 42 13 342 A1, column 6, line 66 to column 7, Line 27 and also from DE 196 80 007 C1 a device for Removal of such particles picked up by the bristles is known.
  • This device can either be a vacuum device with a Suction port or a blowing device. However, this is especially inadequate for fine dust removal.
  • the device mentioned characterized in that as a means for removal captured particles at least one rotating stripping element is provided, the surface facing the cleaning device the stripping element at least in the use position a distance from a bristle carrier of the brush-shaped cleaning device or of which the bristle-carrying carrier strip of the linear brush has the is less than the bristle length, so that the stripping element at Use engages between bristle ends and the acted upon Bristles bend.
  • the brush-shaped cleaning device be it a roller brush or brush roller or a linear brush mechanically loaded with the deflection point so that the bristles particles picked up or adhering to them detached and / or thrown by springing back of the bristles be, the centrifugal force of the driven Cleaning device such a process of spinning off can support.
  • Such mechanical loading of the Bristles with simultaneous engagement at least between the ends the bristles and their deformation is much more effective than an air flow generated by suction and / or blowing, in which possibly against this airflow at the back of one Bristle particles can not be reached.
  • the stripping element can be profiled on its outer circumference, for example, one that is transverse to its direction of rotation or somewhat oblique for this purpose running toothing and / or bristles projecting approximately radially exhibit.
  • a toothing in which the teeth and the tooth gaps transverse to the direction of rotation or somewhat obliquely to the circumference of the Scraper run, causes this when rotating Wiping element a constant change in the strength of the application the bristles, each bent more by the teeth and can then bounce back into the tooth gaps so that the Bristles undergo rapid alternating movements that the Increase cleaning effect.
  • the axis of rotation of the rotating stripping element can be parallel to Rotation axis of the brush roller or a deflection roller of the linear brush or at an acute angle to the axis of rotation of the brush roller or Loudly brush roller or the deflection roller. This can cause a relatively uniform application across the entire axial direction extending area of the brush-shaped cleaning device can be achieved especially when the bristles in the are essentially the same length, so that they are parallel to the axis of rotation or deflecting roller-extending surface lines at the ends of the bristles surrender.
  • the direction of rotation of the rotating stripping element can Direction of rotation of the roller brush or the deflection roller of the linear brush, in the area where it is arranged, be opposite.
  • the scraper element alone can be rotated by the movement of the cleaning device especially if it has a profiled surface so that the bristles of the cleaning device with this surface to a certain extent interlock.
  • the rotating stripping element is driven and / or in its Direction of rotation is reversible. This allows in particular through different peripheral speeds at each other relative movements and corresponding areas mechanical effects can be achieved.
  • a first stripping element can have a certain one Pre-cleaning and one in the direction of rotation or movement of the cleaning device then arranged further stripping element for example with a different speed, different profiling and / or other dimensions produce an additional cleaning effect.
  • the width or axial extent of the cleaning device favorable if the rotating scraper elements roll or squeegee, preferably profiled on the surface are. These can be manufactured relatively easily and yet effective parts, due to their roll or roller shape with largely or completely constant in the axial direction Cross sections a correspondingly uniform treatment of the result in the respective bristle area of the cleaning device.
  • a further additional enhancement of the cleaning effect can be achieved in that the means for removing the at the cleaning particles ingested at least one in particular with the mechanical stripping element interacting blowing nozzle for Compressed air has on the bristles or across the bristles between these is directed at the mouth of this blow nozzle can be moved past.
  • compressed air can be used immediately the tips of the bristles or at some distance from the tips a corresponding draft is caused between these bristles, which in connection with the mechanical deformation of the bristles the scraper element the adhering particles with even larger Security solves and also from the area of the bristles can drive out.
  • the blowing nozzle can be in the direction of advance or rotation of the brush arranged behind the rotating scraper element (s) or squeegee his.
  • Another support of the cleaning effect and another Improvement of the device for removing the particles from the Cleaning device can consist in that in the area of the rotating scraper elements and / or the blow nozzle or blow nozzles a housing with a suction device for removing the through the Device of particles loosened from the bristles is provided. Thereby can be prevented that possibly under unfavorable conditions thrown particles back onto the brush or the brush-shaped Fall back of the cleaning device. It also supports the suction device forms a guided by the bristles Air flow, the loose or through the mechanical wiper can take loose particles with them, which otherwise might be despite the mechanical loading and / or the loading with Compressed air could remain between the bristles.
  • the removal of particles and thus the cleaning of the Cleaning device can also be favored in that the device has at least one spray device for spraying has a liquid on the brush, which is used to wet the from the bristles to increasing or picked up and to be removed Particles and thus used to clean the brush.
  • the device has at least one spray device for spraying has a liquid on the brush, which is used to wet the from the bristles to increasing or picked up and to be removed Particles and thus used to clean the brush.
  • a further advantageous embodiment of the invention relates to that this device for removing the cleaning device and its Bristle-containing particles enclosing housing, in which the particles should not stick so as not to come back possibly to get on the brush.
  • the relevant design of the The device according to the invention can consist in that within of the housing in the area of the device for removing through the bristles picked up particles or one or more membranes Swing plates are arranged, which at least the inside of the housing partially shield and to loosen on these membranes and / or particles adhering to the suction housing can be excited to vibrate.
  • These membranes can be made of plastic, for example can exist or the vibrating plates through the suction air be excited to vibrate, so that possibly baking or adhering particles do not find a permanent hold, but again shaken off and then suctioned off.
  • Existing membranes or vibrating plates can use suction or compressed air serve and there may be additional compressed air nozzles be provided.
  • the desired vibration of the membrane or vibrating plates in a targeted manner and also in their frequency are influenced in which the corresponding compressed air nozzles required flow direction and above all the necessary Cause air speed for such a vibration process.
  • the compressed air nozzles can be used to excite the membrane and / or the oscillating plates in the direction of movement of the brush behind the mechanical wiping element and / or behind the blow nozzles and especially at a greater distance from the bristles than the blow nozzles be arranged.
  • At least one mechanical rotating stripping element of brush surfaces or bristles of a brush-shaped Particles so far removed cleaning device be that the entire device for fine dust removal suitable is.
  • This intense removal during a cleaning process Particles picked up from the cleaning device allowed on on the other hand a very long-lasting cleaning company, which does not have to be interrupted by the cleaning device from time to time itself must be cleaned.
  • the for this purpose, device 1 has at least one bristle 2 Cleaning device, which is convex at least in certain areas is.
  • this cleaning device is concerned around an upper strand 3a and a lower strand 3b Linear brush 3, the convex area of which in particular driven pulley 4 is where the bundle of bristles 2 and the bristles 2 themselves slightly each due to the curvature be spread apart.
  • the surface to be cleaned can either with the upper run 3a or with the lower run 3b with this cleaning area and a second pulley 4 are not shown for the sake of clarity. Furthermore can two such cleaning devices 3 or two devices 1 be provided around two parallel surfaces or compartment sides a plate, glass plate, etc. at the same time. Instead of such a linear brush 3, in which the bristles 2 on one elastic and deflectable carrier tape 5 could be attached as a cleaning device also at least one brush roller, pot brush or the like may be provided.
  • the device exhibits cleaning of surface particles 1 also several means for removing by the Cleaning device and its bristles 2 absorbed particles, which are described in more detail below.
  • the corresponding Facilities are outside of the cleaning area and preferably in the convex area of the cleaning device or the linear brush 3 arranged where by the curvature the bundle 2 and the bristles 2 themselves, as already mentioned, something be spread apart and the centrifugal force due to the Rotation of the deflection roller 4 already in the sense of a particle Spin off applied.
  • a rotating scraper element 6 is provided, the cleaning device or the brush 3 facing surface of this stripping element 6 in the position of use a distance from the bristle holder of the cleaning device, So in the embodiment of the bristles 2 carrying Carrier tape 5 of the linear brush 3 has less than that Bristle length is such that the stripping element 6 is somewhat in use engages between the bristle ends and the loaded bristles at least slightly bent. Due to the relative movements can this removes adhering particles between the bristles and by the movement of the cleaning device or the Linear brush 3 are thrown off.
  • the stripping element 6 roll or roller-shaped and profiled on its outer circumference and is at right angles to the one indicated by the arrow Pf1 Direction of rotation or somewhat oblique gears or Has grooves. Instead, it could also have radially protruding bristles or have a different profile. In cooperation with the Bundling of bristles 2 results from this shape effective loading of these bristles and shaking off or centrifuging particles located between the bristles 2.
  • the axis of rotation of the rotating stripping element 6 is parallel to the axis of rotation of the deflection roller 4 of the linear brush 3, could but also run at a somewhat acute angle.
  • Pf2 is indicated that the direction of rotation of the deflection roller 4 Linear brush 3, in the area of which the rotating stripping element 6 is arranged, which is opposite to the stripping element 6, so that there is in the contact area between the stripping element 6 and bristles 2 results in a rectified peripheral speed.
  • these peripheral speeds can be the same or different.
  • the absorbed particles are loosened in any case and at least for the most part in cooperation with the movement of the Linear brush 3 and the centrifugal force in the area of the deflection roller 4 detached and flung off.
  • a cleaning device or a linear brush 3 with soft bristles could also the directions of rotation according to the arrows Pf1 and Pf2 be rectified, so that on the surface of the cleaning device an opposite rotation and a corresponding one stronger mechanical stress results.
  • the rotating Scraper element driven or freely rotatable and thereby by the bristles 2 can be driven into the tooth-like surface profile intervene and take the rotatable scraper element 6 with you can. If the stripping element 6 is itself driven, it can also be reversible in its direction of rotation to adapt to enable a wide variety of needs and requirements. Furthermore, several, possibly in different Direction of rotation of rotatable or driven scraper elements 6 be provided one after the other. This rotating scraper 6 can also be designed as a profiled and rotatable doctor blade or be called.
  • particles also belong to at least one with the mechanical stripping element 6 cooperating blowing nozzle 7 for compressed air, whereby for everything in Figure 1, but also in Figure 2 it can be seen that a whole series of such blowing nozzles 7 is provided, which is parallel to the surface lines of the deflected Linear brush 3 and next to each other parallel to the axes of rotation are arranged.
  • blow nozzles 7 are on the bristles 2 directed transversely to the bristles 2 between them, the bristles 2 are moved past the mouths of the blowing nozzles 7.
  • the entire device 1 can additionally with a Suction device 8 can be combined or interact, which is clear recognizable in Figure 1 and by the dashed lines shown arrows Pf3 - also in Figure 2 - is indicated.
  • a housing 9 with one in particular indicated by the arrows Pf3 suction device for removing the particles released from the bristles 2 are provided, the Suction device 8 possibly corresponding suction fan or the like may contain.
  • device 1 includes at least one spray device 10 to spray on a liquid on the brush 3, the Wetting the bristles 2 on increasing or absorbed and particles to be removed and thus for cleaning the brush 3 serves.
  • This spray device 10 is in the feed direction of the brush in the last position of the deflection area and the deflection roller 4 arranged so that bristles 2 are wetted, from which the particles are largely removed beforehand. The bristles so wetted 2 but finally get back in the further circulation of the brush 3 in the area of this guide roller 4 and thus in the area of Scraper element 6 and also the blow nozzles 7 and the suction device 8. Especially fine particles can cause such wetting better stripped and flung off.
  • FIG. 2 Within the housing 9 shown only partially in FIG. 1 and in the area of the device for removing through the bristles 2 captured particles are according to FIG. 2, according to FIG. 3 but several membranes 11 are provided covering the inside of the housing shield at least partially and to loosen on these membranes 11 and / or particles adhering to the suction housing 9 for Swing are excitable. Should there be dust and the like Fix particles on the inside of the housing 9 and a covering or the like, they can form through the vibrating membranes 11 are released again so that they are from the air flow according to the Arrow Pf3 can be dissipated.
  • To excite vibrations on the preferably made of plastic membranes 11 or Swing plates can serve suction and / or compressed air and can according to FIG.
  • additional compressed air nozzles 12 may be provided for this, the one or more air flows on the slightly curved membranes 11 direct.
  • the Membrane 11 are set in vibrations, this still being can be increased that the air flow is pulsating.
  • the Compressed air nozzles 12 are vibrating to excite the membranes 11 in the embodiment in the direction of movement of the brush 3 behind the mechanical stripping element 6 and also behind the bristles 2 acting blowing nozzles 7 and at a greater distance arranged to the bristles 2 as these blowing nozzles 7. Still can also the air flow emanating from the compressed air nozzles 12 in addition to removing loosened from the bristles 2 Particles contribute something.
  • the compressed air on the membranes 11 or vibrating plates Vibrations generated can be in the near-ultrasound range or lie in the ultrasonic range, so that the membrane 11 and thus the inside of the housing 9 practically ultrasonically cleaned becomes.
  • the device 1 is used for cleaning surfaces and has a brush-like cleaning device, for example a roller brush or preferably one having an upper strand 3a and a lower strand 3b Linear brush 3 with corresponding deflection rollers 4.
  • a brush-like cleaning device for example a roller brush or preferably one having an upper strand 3a and a lower strand 3b Linear brush 3 with corresponding deflection rollers 4.
  • To the device 1 includes a device for removal by the cleaning device and its bristles 2 captured particles that are outside the actual cleaning area especially in a convex shaped area of the brush-shaped cleaning device, where the bristles 2 by the curvature of their brush body or Carrier tape 5 are spread apart towards the ends, so that already absorbed particles reach more easily and can be removed.
  • As a means of removing such Particle serves at least one rotating mechanical Scraper element 6, which dips somewhat between the bristles 2 and thereby mechanical loading and thus loosening and removal of the particles.
  • blowing and / or Suction air improve particle

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  • Cleaning In General (AREA)
EP00108295A 1999-05-03 2000-04-14 Dispositif pour nettoyer des surfaces Withdrawn EP1050348A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19920250 1999-05-03
DE19920250A DE19920250C2 (de) 1999-05-03 1999-05-03 Vorrichtung zum Reinigen von Oberflächen

Publications (2)

Publication Number Publication Date
EP1050348A2 true EP1050348A2 (fr) 2000-11-08
EP1050348A3 EP1050348A3 (fr) 2002-10-30

Family

ID=7906779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00108295A Withdrawn EP1050348A3 (fr) 1999-05-03 2000-04-14 Dispositif pour nettoyer des surfaces

Country Status (2)

Country Link
EP (1) EP1050348A3 (fr)
DE (1) DE19920250C2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007059919A3 (fr) * 2005-11-22 2007-11-29 Robo Paper B V Dispositif et procede pour nettoyer une bande de matiere rotative
CN107051927A (zh) * 2017-03-21 2017-08-18 苏州杰锐思自动化设备有限公司 极片横向除尘装置
CN110803545A (zh) * 2019-11-27 2020-02-18 衡阳县海华水泥有限责任公司 一种水泥生产用的除尘装置
WO2020145836A1 (fr) * 2019-01-11 2020-07-16 Bjelotomic Snezana Dispositif de nettoyage de brosse à cheveux et de brosse de soufflage
CN111760824A (zh) * 2020-08-03 2020-10-13 嘉兴固达金属科技股份有限公司 杆料工件表面清理装置
CN111842218A (zh) * 2019-04-26 2020-10-30 合肥美亚光电技术股份有限公司 用于色选机的清灰装置、具有其的色选机及其清洁组件
CN119277671A (zh) * 2024-10-22 2025-01-07 佛山市顺德区厚信电子配件有限公司 一种高效多功能集成式电路板生产设备

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1315066B1 (it) * 2000-12-15 2003-01-27 Douss Line S R L Apparecchio per la pulizia di scope,spazzole, spazzoloni esimili
DE10226808A1 (de) * 2002-06-15 2004-01-08 Wandres Gmbh Micro-Cleaning Vorrichtung zum Reinigen von insbesondere Lochungen aufweisenden Oberflächen
DE102007047190A1 (de) 2007-10-02 2009-05-14 Dürr Systems GmbH Entstaubungsverfahren und entsprechende Entstaubungseinrichtung
US9301441B2 (en) * 2014-01-31 2016-04-05 Deere & Company Brush conditioner for a planting unit
CN113000444A (zh) * 2021-02-23 2021-06-22 山东领能电力工程有限公司 一种电力设备专用除尘清扫装置
DE102023106044A1 (de) * 2023-03-10 2024-09-12 Wandres Gmbh Micro-Cleaning Reinigungsvorrichtung, Verfahren zur Reinigung und Verwendung einer Reinigungsvorrichtung für schnell laufende Oberflächen
CN117864719B (zh) * 2024-03-12 2024-07-09 国网山东省电力公司临朐县供电公司 一种配电柜输送装置
DE102024111869A1 (de) * 2024-04-26 2025-10-30 Wandres Gmbh Micro-Cleaning Reinigungsvorrichtung für mit Trockenschmierstoff oder Korrosionsschutzöl behandelte Metalloberflächen

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
DE606028C (de) * 1932-11-27 1934-11-23 Joachim Schade Einrichtung zum Beseitigen von Krusten in Waermeaustauschapparaten und Rohrleitungen durch elastische Formaenderungen
JPS4825134Y1 (fr) * 1969-06-24 1973-07-23
US4213794A (en) * 1979-03-12 1980-07-22 Eastman Kodak Company Cleaning station
DE3810085A1 (de) * 1988-03-25 1989-10-12 Kuesters Eduard Maschf Reinigungsvorrichtung fuer eine walze
DE4213342A1 (de) * 1992-04-23 1993-10-28 Wandres Micro Cleaning Vorrichtung zum mechanischen Reinigen von Oberflächen
US5297363A (en) * 1992-09-28 1994-03-29 Schroder Lowell W Portable surface preparation abrading unit
DE4314046C2 (de) * 1993-04-29 1995-02-23 Claus G Dipl Ing Wandres Verfahren und Vorrichtung zum Entfernen von an Oberflächen anhaftenden Partikeln durch ein Wischelement
US5745945A (en) * 1996-06-28 1998-05-05 International Business Machines Corporation Brush conditioner for a semiconductor cleaning brush

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007059919A3 (fr) * 2005-11-22 2007-11-29 Robo Paper B V Dispositif et procede pour nettoyer une bande de matiere rotative
CN107051927A (zh) * 2017-03-21 2017-08-18 苏州杰锐思自动化设备有限公司 极片横向除尘装置
WO2020145836A1 (fr) * 2019-01-11 2020-07-16 Bjelotomic Snezana Dispositif de nettoyage de brosse à cheveux et de brosse de soufflage
CN111842218A (zh) * 2019-04-26 2020-10-30 合肥美亚光电技术股份有限公司 用于色选机的清灰装置、具有其的色选机及其清洁组件
CN110803545A (zh) * 2019-11-27 2020-02-18 衡阳县海华水泥有限责任公司 一种水泥生产用的除尘装置
CN111760824A (zh) * 2020-08-03 2020-10-13 嘉兴固达金属科技股份有限公司 杆料工件表面清理装置
CN119277671A (zh) * 2024-10-22 2025-01-07 佛山市顺德区厚信电子配件有限公司 一种高效多功能集成式电路板生产设备

Also Published As

Publication number Publication date
DE19920250A1 (de) 2000-11-16
DE19920250C2 (de) 2001-10-11
EP1050348A3 (fr) 2002-10-30

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