EP3507236B1 - Pompe électrique portative à bague d'étanchéité adaptable de la plaque suiveuse - Google Patents

Pompe électrique portative à bague d'étanchéité adaptable de la plaque suiveuse Download PDF

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Publication number
EP3507236B1
EP3507236B1 EP17754694.2A EP17754694A EP3507236B1 EP 3507236 B1 EP3507236 B1 EP 3507236B1 EP 17754694 A EP17754694 A EP 17754694A EP 3507236 B1 EP3507236 B1 EP 3507236B1
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EP
European Patent Office
Prior art keywords
container
follower plate
wiper ring
contact part
wall
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.)
Active
Application number
EP17754694.2A
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German (de)
English (en)
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EP3507236A1 (fr
Inventor
Thomas Hausner
Gerrit ENDERLE
Siegmund Oberhofer
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.)
Atlas Copco IAS GmbH
Original Assignee
Atlas Copco IAS GmbH
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
Priority claimed from DE102016010622.0A external-priority patent/DE102016010622A1/de
Priority claimed from DE102017100712.1A external-priority patent/DE102017100712A1/de
Application filed by Atlas Copco IAS GmbH filed Critical Atlas Copco IAS GmbH
Publication of EP3507236A1 publication Critical patent/EP3507236A1/fr
Application granted granted Critical
Publication of EP3507236B1 publication Critical patent/EP3507236B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/58—Arrangements of pumps
    • B67D7/62—Arrangements of pumps power operated
    • B67D7/64—Arrangements of pumps power operated of piston type
    • B67D7/645—Barrel pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material

Definitions

  • the invention relates to a method for conveying viscous material according to the preamble of claim 1.
  • the wiper ring rests on the inner surface of the container wall and, on the one hand, seals the inside of the barrel from the environment.
  • the follower plate when the follower plate is lowered, it wipes off any material adhering to the inner surface of the drum wall. If the barrel is empty, it must be exchanged for a new, full barrel.
  • the follower plate must be moved up out of the barrel. In order to be able to move the follower plate upwards in the barrel, the inside of the barrel must be ventilated, otherwise a vacuum would arise in the barrel, which would prevent the follower plate from moving out. In previously known devices, this is achieved in that through a ventilation opening compressed air is introduced into the drum in the follower plate. Since the follower plate has a large area, an overpressure in the drum causes a large force on the follower plate. Controlling the upward movement of the follower plate therefore requires some effort.
  • a method is known with which a piston acting as a follower plate is introduced into the cylinder space of the barrel and heated in a barrel melting device so that it melts the material to be conveyed in the barrel so that it can be conveyed out of the barrel.
  • the piston is provided with sealing means which are in sealing contact with a barrel wall.
  • the sealing means can be expanded in particular by introducing compressed gas. It is provided that the sealing means are expanded to the desired size before the introduction of the piston into the barrel. The sealant remains in this size until it has to be adapted to a drum of a different size.
  • the DE 201 02 413 U1 thus contribute nothing.
  • the expanded sealant makes it difficult to insert the follower plate into a new, filled drum.
  • the invention is based on the idea of varying the sealing effect of the wiper ring in a targeted manner in order, on the one hand, to achieve a good sealing effect when the barrel or the container is at least partially filled with viscous material, and to prevent air from entering the container , and on the other hand to cancel the sealing effect in whole or in part when the follower plate is to be removed from the emptied container or inserted into a new, full container.
  • a contact portion of the wiper ring that projects radially outwards and is intended to rest against the inner surface of the container wall can be acted upon with a variable contact force for pressing against the inner surface.
  • the contact pressure is variable in the sense that it can assume at least two different values, with one value achieving a sealing effect and the other value achieving no or only a slight sealing effect.
  • the contact force can be changed discretely or continuously between these extreme values.
  • the follower plate before the start of the material conveyance, the follower plate is first inserted into the container, and then the contact part is pressed against the inner surface. This makes it easier to insert the follower plate into the container.
  • the contact part is only pressed against the inner surface when the follower plate rests on the surface of the material, so that it can be moved almost smoothly inside the container until the sealing effect is required.
  • the resting of the follower plate on the surface of the material is detected by means of a sensor, so that the contact part is pressed against the inner surface by means of a control device based on a signal from the sensor.
  • the follower plate is moved by means of a lifting device having a spindle drive and that the sensor detects a change in the torque acting on the spindle of the spindle drive. When the torque increases, the sensor sends a signal to the control device, which triggers the pressing of the contact part against the inner surface.
  • the follower plate is suspended from a lifting device and the sensor detects a separation of the follower plate from the lifting device. The sensor is then a simple switch, which then switches and forwards its switching signal to the control device when the lifting device moves further down, but because the follower plate rests on the material, the latter or a rod connected to it at a support point of the lifting device is mechanically separated. It is also possible to switch off the downward movement of the lifting device by triggering the switch.
  • compressed air is expediently introduced into an area between the follower plate and the container bottom. This can be done before the sealing effect between the wiper ring and the container wall is canceled, so that the overpressure in the container already lifts the follower plate a little.
  • the introduction of the compressed air into the container can, however, also take place simultaneously with the cancellation of the sealing effect between the wiper ring and the container wall.
  • a detection device can be present which detects the type of container and sets the contact pressure of the contact part as a function of the type of container. This takes account of the fact that different containers can have different levels of stability, so that a high contact force is harmless for different containers, but can deform other containers, which is not desired. On the other hand it is advantageous to set the contact force as large as possible in order to achieve a good sealing effect.
  • the contact part can be withdrawn from the inside of the container wall by reducing the contact pressure.
  • the contact pressure is then zero.
  • the follower plate can then be removed from the container, with the wiper ring ideally not touching the container wall.
  • the pressure force can be varied in different ways. It is preferred, however, that the wiper ring is hollow and has an outer wall enclosing an at least partially circumferential cavity.
  • the outer wall is expediently thicker in the area of the system part than in its other areas.
  • a ventilation device is advantageously provided for the wiper ring, with which air can be introduced into the cavity or discharged from it. If pressure is applied to the cavity, the wiper ring expands and the contact pressure with which the contact part is pressed against the container wall is increased. If the outer wall is thicker in the area of the contact area, more material is available there, so that the sealing effect is improved.
  • the contact part can be moved between a sealing position and a release position by applying two predetermined different pressures to the cavity by means of the ventilation device.
  • the sealing position it lies against the inner surface of the container wall in a sealing manner, while in the release position the sealing effect is canceled.
  • the follower plate can have a wiper ring.
  • at least one further wiper ring can advantageously be provided, which is structurally identical to the wiper ring and is arranged at a distance parallel to it.
  • a transport device for transporting the container.
  • This transport facility is used in particular when the lifting device is set up on a building wall, the follower plate is mounted by means of at least one vertically extending holding rod on a horizontally extending traverse, which is mounted at or near a first end on a lifting device for raising and lowering the traverse, while its second end is free and the traverse extends away from the building wall in its longitudinal extension extending from the lifting device to the free end. It is then possible for the transport device to transport the container parallel to the extension of the building wall to the follower plate and to transport the emptied container away from the follower plate.
  • the transport device has a roller conveyor on which the container is placed.
  • the conveyor device according to the invention with a control device with which the container is automatically positioned under the follower plate by means of the transport device, with which the follower plate is automatically inserted into the container, with which the follower plate is automatically removed from the container after it has been emptied is removed and with which the emptied container is automatically transported away by means of the transport device.
  • material can be conveyed through a waste line into a waste container until the measured speed of the delivery piston lies in a predetermined tolerance range around a predetermined target speed.
  • the conveyed material can also be checked for the presence of air bubbles by measuring the speed of the conveying piston during the conveying stroke.
  • the device 10 shown schematically in the drawing is used to convey viscous material such as adhesive, sealant or insulating material from a barrel-like container 12.
  • the conveying device 10 is not shown in detail, but reduced to the essential components for understanding the invention.
  • the container 12 essentially has a cylindrical shape with a container base 14 and one extending from the container base 14 to one Container top 16 extending upwards and circumferentially around the container wall 18.
  • the container 12 is open to the container top 16.
  • the conveying device 10 has a follower plate 20 which is introduced into the container 12 for conveying the material and rests there on the material surface.
  • the follower plate 20 is on an in Fig. 1
  • the frame, not shown, is arranged and can be moved up and down by means of a lifting device 50. It has a central dome 22 which extends upwards from an underside 24 lying on the material and opens into a material outlet 26. From the material outlet 26, the material is conveyed to the place of use by means of a feed pump 40 via a material line.
  • the follower plate 20 has a circumferential wiper ring 28 made of elastically stretchable material, in the present case of rubber, which is tubular with an outer wall 32 enclosing an annular cavity 30.
  • the outer wall 32 is radially outwardly pointing and protruding outward Area is thickened to form a contact part 34 which is intended for sealing contact with an inner surface 36 of the container wall 18.
  • a ventilation device not shown
  • the contact part 34 is moved into a sealing position in which, as in FIG Figures 2a, 2b shown, is pressed by the force exerted by the compressed air in the cavity 30 against the inner surface 36 and seals the container interior 38 located under the follower plate 20 from the environment.
  • a container 12 filled with material is first provided.
  • the follower plate 20 is inserted from above through the open top side 16 of the container into the container interior 38, the cavity 30 being vented so that the diameter of the wiper ring 28 is smaller than the interior diameter of the container 12 (cf. Fig. 1 ).
  • the follower plate 20 is moved downward until its underside 24 is on a surface of the material contained in the container 12 rests. This contact is detected by a sensor which sends a signal to a control device which triggers the introduction of compressed air into the cavity 30.
  • the wiper ring 28 increases its diameter so that the contact part 34 is moved into the sealing position.
  • the follower plate 20 is in the in Fig. 2a position shown, in which its bottom 24 rests on the surface of the material in the filled container 12.
  • the contact part 34 is in its sealing position, so that the wiper ring 28 seals the container interior 38 from the environment. If material is conveyed out of the container 12, the material level drops and the follower plate 20 is moved downwards following the material level by means of the lifting device in the container 12, with the contact part 34 sliding over the inner surface 36, overcoming a frictional force, and wiping off any material adhering to it .
  • the follower plate 20 When the container is completely empty, the follower plate 20 is on the container bottom 14, as in FIG Figure 2b shown, with a thin film of material between the follower plate 20 and the container bottom 14 possibly also being located.
  • compressed air is introduced into the dome 22, so that the follower plate 20 is lifted from the container bottom 14.
  • the force pressing the contact part 34 against the inner surface 36 is removed by releasing compressed air from the cavity 30, so that the contact part 34 withdraws from the inner surface 36.
  • the contact part 34 is then in a release position in which the sealing effect between the container interior 38 and the environment is canceled.
  • the follower plate 20 is then lifted out of the container 12 until it is again in the position shown in FIG Fig. 1 position shown.
  • the empty container 12 can then be replaced by a new, full container and the conveying process can begin again.
  • feed pump 40 is connected, which is used to transfer material from the container 12 via the material outlet 26 to a processing station leading conveyor line 42 to promote.
  • the feed pump 40 has a feed cylinder 44 fixedly mounted on the follower plate 20 and a feed piston, not shown in the drawing, which can be moved back and forth in the feed cylinder 44 and whose linear movement in the feed cylinder 44 sucks material through the material outlet 26 into the feed cylinder 44 and removes the material pushes the delivery cylinder 44 into the delivery line 42.
  • a lifting device 50 is provided in the conveyor device 10 according to the invention, on which a horizontally extending cross member 52 in the form of a metal plate is provided its first end 54 is mounted, while its second end 56 is free.
  • Two holding rods 58, which carry the follower plate 20, run vertically downward from the traverse 52.
  • the lifting device 50 has a spindle drive, which is not shown in detail and is driven by means of an electric motor, for lifting and lowering the cross member 52.
  • the conveying device 10 also has a transport device 80 which has a roller conveyor 82 with which the container 12 can be transported in a direction perpendicular to the longitudinal extent of the cross member 52. In this way, empty containers 12 can be transported away from the follower plate 20 and full containers 12 can be transported under the follower plate 20.
  • a housing 84 is also provided, which surrounds the container 12 and the follower plate 20 during the introduction of the follower plate 20 into the container 12 and during the conveying of the material.
  • the housing 84 has two transparent sliding doors 86, 88 arranged one above the other, each surrounding an interior space, which surround the container 12, the follower plate 20 and the feed pump 40 during operation in order to minimize the risk of injury to the operating personnel.
  • the upper sliding door 86 can be displaced downwards, while the lower sliding door 88 can be displaced upwards in order to enable a container to be changed.
  • a control device is provided with which a filled container is fully automatic 12 is positioned under the follower plate 20 by means of a feed on the roller conveyor 82 with which the follower plate 20 is automatically inserted into the container 12, with which the follower plate 20 is automatically removed from the container 12 after it has been emptied and with which the emptied container 12 is automatically transported away by means of the transport device 80.
  • a sensor 98 detects the correct positioning of the container 12 under the follower plate 20.
  • the delivery device 10 also has a measuring device 90 with which the speed of the delivery piston can be measured during the delivery stroke.
  • the measuring device 90 has a displacement measuring unit in the form of an absolute value encoder 92, the housing of which is mounted on the lifting device 50.
  • a piston rod 94 firmly connected to the delivery piston is led upward out of the delivery cylinder 44 and is rigidly connected to a movable element of the absolute value encoder 92 by means of connecting rods 96.
  • the displacement measuring device 90 also has a control unit, not shown in detail, which controls the conveyance of the viscous material as a function of the measured speed of the conveying piston.
  • the control unit detects when the measured speed of the delivery piston is outside a tolerance range around a specified target speed, which indicates that the consistency of the material being conveyed has changed to such an extent that its suitability is in question. In this case, the control unit switches a valve 100 so that the conveyed material is not conveyed to the processing station, but into a waste line 102 branching off from the conveying line 42 and leading to a waste container 104. If the control unit detects that the speed of the delivery piston is again within the tolerance range, it switches the valve 100 again, and the viscous material is again delivered to the processing station via the delivery line 42.
  • the measuring device 90 is intended in particular to prevent material interspersed with air bubbles from being conveyed.
  • the invention relates to a device 10 for conveying viscous material from a barrel-like container base 14 and a container wall 18 extending from the container base 14 to a container top side 16, having a container wall 18 open to the container top side 16, with a container 12
  • Follower plate 20 which has a material outlet 26 connected to a feed pump, for closing the container 12, wherein the follower plate 20 has a wiper ring 28 running all the way around and the wiper ring 28 has a radially outwardly projecting contact part 34 for contact with an inner surface 36 of the container wall 18 facing the follower plate 20 having.
  • the contact part 34 can be acted upon with a variable contact pressure for pressing against the inner surface 36 of the container wall 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)
  • Basic Packing Technique (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Claims (12)

  1. Procédé de refoulement de matériau visqueux hors d'un conteneur (12) du type tonneau comprenant un fond (14) et une paroi périphérique (18) qui s'étend à partir dudit fond (14) du conteneur en direction d'une face supérieure (16) dudit conteneur, lequel est ouvert vers ladite face supérieure (16), avec utilisation d'un dispositif (10) muni d'une platine suiveuse (20) dévolue à l'obturation dudit conteneur (12), ladite platine suiveuse (20) étant pourvue d'une bague de raclement (28) qui ceinture la périphérie, et ladite bague de raclement (28) étant dotée d'une zone de contact (34) pointant radialement vers l'extérieur et conçue pour venir en applique contre une surface intérieure (36) de la paroi (18) du conteneur, tournée vers ladite platine suiveuse (20), laquelle zone de contact (34) peut être sollicitée par une force de pression variable, afin d'être plaquée contre ladite surface intérieure (36) de la paroi (18) du conteneur, sachant que ladite platine suiveuse (20), reposant sur une surface du matériau, est animée d'un mouvement la dirigeant vers le fond (14) du conteneur consécutivement à une baisse de niveau dudit matériau, et l'éloignant dudit fond (14) du conteneur après vidage dudit conteneur (12), sachant que, durant le mouvement de la platine suiveuse (20) en direction du fond (14) du conteneur, la bague de raclement (28) est pressée de manière étanche, par sa zone de contact (34), contre la surface intérieure (36) de la paroi (18) dudit conteneur, sachant que, durant le mouvement de ladite platine suiveuse (20) à l'écart dudit fond (14) du conteneur, l'effet d'étanchement, entre ladite bague de raclement (28) et ladite paroi (18) du conteneur, est supprimé par diminution de la force de pression et sachant que, préalablement au début du refoulement de matériau, ladite platine suiveuse (20) est tout d'abord introduite dans le conteneur (12) et la zone de contact (34) est ensuite plaquée contre la surface intérieure (36), caractérisé par le fait que la zone de contact (34) est plaquée, contre la surface intérieure (36), uniquement lorsque la platine suiveuse (20) repose sur la surface du matériau ; par le fait que l'entrée en contact de ladite platine suiveuse (20) avec la surface du matériau est détectée au moyen d'un capteur ; et par le fait que ladite zone de contact (34) est plaquée contre ladite surface intérieure (36) au moyen d'un système de commande, sur la base d'un signal dudit capteur.
  2. Procédé selon la revendication 1, caractérisé par le fait que des mouvements sont imprimés à la platine suiveuse (20) au moyen d'un système de levage (50) équipé d'un entraînement à broche ; et par le fait que le capteur détecte une variation du couple de rotation agissant sur la broche dudit entraînement à broche.
  3. Procédé selon la revendication 1, caractérisé par le fait que la platine suiveuse (20) est suspendue à un système de levage (50), et le capteur détecte une séparation de ladite platine suiveuse (20) d'avec ledit système de levage (50).
  4. Procédé selon l'une des revendications précédentes, caractérisé par le fait qu'à l'issue du vidage du conteneur (12), de l'air comprimé est introduit dans une région située entre la platine suiveuse (20) et le fond (14) dudit conteneur, en vue de soulever ladite platine suiveuse (20) lors de la suppression de l'effet d'étanchement entre la bague de raclement (28) et la paroi (18) dudit conteneur, ou préalablement à cette suppression.
  5. Procédé selon l'une des revendications précédentes, caractérisé par le fait que le type du conteneur (12) est identifié au moyen d'un système d'identification, et la force de pression de la zone de contact (34) est réglée en fonction du type dudit conteneur (12).
  6. Procédé selon l'une des revendications précédentes, caractérisé par le fait que, durant le mouvement de la platine suiveuse (20) l'éloignant du fond (14) du conteneur, la zone de contact (34) est dissociée d'avec la surface intérieure (36) de la paroi (18) du conteneur par diminution de la force de pression.
  7. Procédé selon l'une des revendications précédentes, caractérisé par le fait que la bague de raclement (28) est creuse, et comporte une paroi extérieure (32) délimitant intérieurement une cavité (30) qui ceinture au moins partiellement la périphérie ; et par le fait que la force de pression est modifiée par aérage et désaérage de ladite cavité (30) au moyen d'un système d'aérage et de désaérage.
  8. Procédé selon la revendication 7, caractérisé par le fait que, pour instaurer et supprimer l'effet d'étanchement en sollicitant la cavité (30) par deux pressions prédéterminées différentes, au moyen du système d'aérage et de désaérage, la zone de contact (34) est mue entre une position d'étanchement, dans laquelle elle est en applique de manière étanche contre la surface intérieure (36) de la paroi (18) du conteneur, et une position de libération dans laquelle l'effet d'étanchement avec ladite surface intérieure (36) de ladite paroi (18) du conteneur est supprimé.
  9. Procédé selon l'une des revendications précédentes, caractérisé par le fait que la platine suiveuse (20) est munie d'au moins une bague de raclement supplémentaire présentant un agencement structurel identique à celui de la bague de raclement (28), et disposée parallèlement à distance de cette dernière ; et par le fait que la force de pression de ladite bague de raclement supplémentaire est modifiée d'une manière correspondant à la force de pression de ladite bague de raclement (28).
  10. Procédé selon l'une des revendications précédentes, caractérisé par le fait que le conteneur (12) est transporté, au moyen d'un système de transport (80), sous la platine suiveuse (20) et à l'écart de ladite platine suiveuse (20).
  11. Procédé selon l'une des revendications 2, 3 ou 10, caractérisé par le fait que le système de levage (50) et/ou le système de transport (80) est (sont) piloté(s) au moyen d'un système de commande (88) et un conteneur (12), empli du matériau visqueux, est positionné automatiquement sous la platine suiveuse (20) et/ou ladite platine suiveuse (20) est introduite automatiquement dans ledit conteneur (12) et/ou ladite platine suiveuse (20) est enlevée automatiquement dudit conteneur (12) à l'issue du vidage de celui-ci et/ou ledit conteneur (12) vidé est automatiquement évacué, par transport, après l'enlèvement de ladite platine suiveuse (20).
  12. Procédé selon l'une des revendications précédentes, caractérisé par le fait que le matériau visqueux est refoulé hors du conteneur (12) au moyen d'une pompe de refoulement (40), pourvue d'un cylindre de refoulement (44) et d'un piston refouleur mobile à va-et-vient dans ledit cylindre de refoulement (44) ; par le fait que la vitesse dudit piston refouleur est mesurée au moyen d'un système de mesure (90) ; et par le fait qu'à l'issue du remplacement d'un conteneur (12) vidé, par un conteneur (12) empli, du matériau est refoulé dans un réceptacle de déchets (104), par l'intermédiaire d'un conduit à déchets (102), jusqu'à ce que ladite vitesse mesurée dudit piston refouleur se situe dans une plage de tolérances préétablie avoisinant une vitesse de consigne préétablie.
EP17754694.2A 2016-09-05 2017-08-15 Pompe électrique portative à bague d'étanchéité adaptable de la plaque suiveuse Active EP3507236B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016010622.0A DE102016010622A1 (de) 2016-09-05 2016-09-05 Vorrichtung und Verfahren zum Fördern von viskosem Material
DE102017100712.1A DE102017100712A1 (de) 2017-01-16 2017-01-16 Vorrichtung und Verfahren zum Fördern von viskosem Material
PCT/EP2017/070672 WO2018041628A1 (fr) 2016-09-05 2017-08-15 Pompe électrique portative à bague d'étanchéité adaptable de la plaque suiveuse

Publications (2)

Publication Number Publication Date
EP3507236A1 EP3507236A1 (fr) 2019-07-10
EP3507236B1 true EP3507236B1 (fr) 2020-10-14

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EP17754694.2A Active EP3507236B1 (fr) 2016-09-05 2017-08-15 Pompe électrique portative à bague d'étanchéité adaptable de la plaque suiveuse

Country Status (5)

Country Link
US (1) US11034575B2 (fr)
EP (1) EP3507236B1 (fr)
KR (1) KR102409581B1 (fr)
CN (1) CN109641735B (fr)
WO (1) WO2018041628A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017100712A1 (de) * 2017-01-16 2018-07-19 Atlas Copco Ias Gmbh Vorrichtung und Verfahren zum Fördern von viskosem Material
DE102016125207A1 (de) * 2016-12-21 2018-06-21 Atlas Copco Ias Gmbh Vorrichtung zum Fördern von viskosem Material
US10518988B1 (en) * 2018-08-27 2019-12-31 Integrated Dispense Solutions Safety mechanism for use with a drum unloader
CN116510972B (zh) * 2023-04-26 2023-11-07 苏州伟志水处理设备有限公司 一种水处理分离膜加工设备

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CN109641735A (zh) 2019-04-16
WO2018041628A1 (fr) 2018-03-08
EP3507236A1 (fr) 2019-07-10
US20190210865A1 (en) 2019-07-11
CN109641735B (zh) 2021-04-30
US11034575B2 (en) 2021-06-15
KR20190042019A (ko) 2019-04-23
KR102409581B1 (ko) 2022-06-15

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