EP3507236B1 - Fasspumpe mit anpassbarem dichtring der folgeplatte - Google Patents
Fasspumpe mit anpassbarem dichtring der folgeplatte Download PDFInfo
- 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
- Authority
- 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
Links
- 238000007789 sealing Methods 0.000 title claims description 35
- 239000000463 material Substances 0.000 claims description 59
- 238000000034 method Methods 0.000 claims description 27
- 230000000694 effects Effects 0.000 claims description 19
- 239000011345 viscous material Substances 0.000 claims description 13
- 239000002699 waste material Substances 0.000 claims description 10
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000005273 aeration Methods 0.000 claims 2
- 238000010276 construction Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 238000012545 processing Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 239000000565 sealant Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012812 sealant material Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
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)
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 (de) | 2016-09-05 | 2017-08-15 | Fasspumpe mit anpassbarem dichtring der folgeplatte |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3507236A1 EP3507236A1 (de) | 2019-07-10 |
EP3507236B1 true EP3507236B1 (de) | 2020-10-14 |
Family
ID=59677226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17754694.2A Active EP3507236B1 (de) | 2016-09-05 | 2017-08-15 | Fasspumpe mit anpassbarem dichtring der folgeplatte |
Country Status (5)
Country | Link |
---|---|
US (1) | US11034575B2 (zh) |
EP (1) | EP3507236B1 (zh) |
KR (1) | KR102409581B1 (zh) |
CN (1) | CN109641735B (zh) |
WO (1) | WO2018041628A1 (zh) |
Families Citing this family (4)
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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2017
- 2017-08-15 WO PCT/EP2017/070672 patent/WO2018041628A1/de active Application Filing
- 2017-08-15 US US16/325,459 patent/US11034575B2/en active Active
- 2017-08-15 KR KR1020197006318A patent/KR102409581B1/ko active IP Right Grant
- 2017-08-15 EP EP17754694.2A patent/EP3507236B1/de active Active
- 2017-08-15 CN CN201780053973.3A patent/CN109641735B/zh active Active
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Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
KR102409581B1 (ko) | 2022-06-15 |
EP3507236A1 (de) | 2019-07-10 |
US11034575B2 (en) | 2021-06-15 |
CN109641735B (zh) | 2021-04-30 |
KR20190042019A (ko) | 2019-04-23 |
CN109641735A (zh) | 2019-04-16 |
US20190210865A1 (en) | 2019-07-11 |
WO2018041628A1 (de) | 2018-03-08 |
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