EP2556256A2 - Drehkolbenpumpe und verfahren zum betreiben einer drehkolbenpumpe - Google Patents
Drehkolbenpumpe und verfahren zum betreiben einer drehkolbenpumpeInfo
- Publication number
- EP2556256A2 EP2556256A2 EP11729047A EP11729047A EP2556256A2 EP 2556256 A2 EP2556256 A2 EP 2556256A2 EP 11729047 A EP11729047 A EP 11729047A EP 11729047 A EP11729047 A EP 11729047A EP 2556256 A2 EP2556256 A2 EP 2556256A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotary
- pump
- rotary piston
- output shaft
- piston pump
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
- F01C17/02—Arrangements for drive of co-operating members, e.g. for rotary piston and casing of toothed-gearing type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/008—Driving elements, brakes, couplings, transmissions specially adapted for rotary or oscillating-piston machines or engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/126—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2230/00—Manufacture
- F04C2230/90—Improving properties of machine parts
- F04C2230/91—Coating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/40—Electric motor
- F04C2240/402—Plurality of electronically synchronised motors
Definitions
- the present invention relates to a rotary lobe pump and a method of operating a rotary lobe pump.
- the rotary piston pump according to the invention is equipped with at least one motor, which drives at least two rotary pistons moving in opposite directions to one another.
- the rotary pistons move in a pump housing.
- the at least two rotary pistons are arranged on a first output shaft and a second output shaft.
- the two output shafts are synchronized and driven in such a way that the at least two rotary pistons are in operative connection with one another and form an active pair.
- German patent application DE 38 25 372 A1 describes an engine with two arranged in a plane ring cylinders in which rotary piston are arranged.
- the rotary pistons are attached to the periphery of a rotatably seated on a shaft rotor disk.
- the rotor discs have peripherally a corresponding slot in which pass through the respective annular cylinder, wherein the two rotary pistons mesh with each other.
- the task of the engine is to set by combustion, a suitable substance, the rotary piston in rotation and drive the waves over this.
- a suitable substance Depending on the design of the design of the
- German Patent DE 10 2005 062 892 B2 discloses a rotary piston machine which is used as an internal combustion engine or as a working machine.
- the two diametrically arranged rotary pistons can periodically create variable-volume working chambers in a ring cylinder housing.
- the rotary pistons are rotationally rigidly connected via shafts pushed into one another, so that the shafts act individually on a common output shaft via an envelope drive system with elliptical transmission disks.
- the envelope can with
- Timing belt, chain or chain to be built Every two symmetrically arranged elliptical timing gears in the system produce constant preload achieved in the Trum and at the same time a mutual transmission of torque when changing the direction of rotation.
- the invention has for its object to provide a compact, low-maintenance and economical rotary lobe pump.
- the invention has for its object to provide a method by which a rotary pump can be operated trouble-free and economical.
- the rotary piston pump according to the invention is provided with at least one motor and with at least two rotary pistons moving in opposite directions to each other.
- the at least two rotary pistons are arranged in a pump housing.
- the at least two rotary pistons are arranged on a first output shaft and a second output shaft.
- the first output shaft and the second output shaft are synchronized and driven with each other such that the at least two rotary pistons mesh with each other. This is realized by the fact that the output shafts can be driven and synchronized via an elastic element. Under the intermeshing is to be understood that the rotary pistons together form an action pair standing in operative connection.
- Rotary pump and secondly, the rotary lobe pump can be operated oil-free.
- This high solids permeability results from the fact that the elastic element, with blockages in the area of the rotary pistons, can yield.
- the elastic element can be dispensed with a conventional transmission, which must run in oil.
- the simultaneous driving and synchronizing of the rotary pistons increases the power density of the rotary piston pump and at the same time reduces the weight.
- the elastic element is in a preferred embodiment, an endless, flexible element.
- This endless, flexible element may be a double toothed belt, a chain or a link belt.
- a double belt can be completely dispensed with the lubrication of the drive system, which is especially in the use of rotary lobe pump in the field of pharmaceutical and / or food industry advantage.
- lubrication must be used. The effort for the
- Lubrication of the chains or link belts is much lower than is the case with conventional gear-driven rotary lobe pumps.
- the double toothed belt can have different profiles. It is important that the double toothed belt has a certain flexibility. Through this
- the teeth of the double belt are always designed such that they form optimal pairs of action with the teeth of the gears located in the system and thus transfer the forces of the drive shaft optimally to the rotary piston.
- the teeth of the double toothed belt should be designed so that they represent the weakest link in the active system in a complete blockage of the rotary pistons. As a result, for example, the teeth would be rubbed off at the point of highest load.
- the endless, flexible element may have a free strand length.
- This free Trum represents a buffer area. Due to the free Trumin the solids handling of the rotary lobe pump is guaranteed.
- the larger the free strand length the stronger the rotors can rotate against each other.
- This rotation of the rotary pistons to each other is after a maximum of one revolution Rotary piston completed.
- the length of the free strand can be adjusted by the radii of the first output gear and the second output gear.
- the radii of the two output gears must always be the same size, otherwise there is no synchronicity of the rotary pistons.
- the distance between the output shafts depends on the design of the rotary pistons. The larger the rotary pistons, the greater the distance between the output shafts. If the distance between the output shafts is large, then the active system can also have a large free strand length and thus a high solids permeability.
- the free span length also influences the synchronization accuracy. The shorter the length of the free strand, the more accurate the rotary lobe pump can be synchronized. This also applies to the possible longitudinal expansion of the free strand.
- the elasticity is ensured by plastic-coated gears.
- the plastic coating is designed such that it allows the rotary piston a rotational angle offset. In this case, the greater the angle of rotation offset of the rotary pistons, the higher the solids permeability of the rotary piston pump.
- This combination of motor and pump is commonly referred to as "piggy back.”
- This embodiment has the advantage that the center of gravity of the motor and the rotary lobe pump are in one axis, the "piggy back" and the rotary lobe pump directly and with a short design to integrate into a piping system.
- a device for maintaining the element voltage In order to ensure the operation of the rotary pump is associated with the endless, flexible element, a device for maintaining the element voltage. With the device for maintaining the element voltage at least one secondary machine can be driven.
- a secondary machine may be, for example, another pump or a pre-shredder.
- a secondary pump may be used, for example, for the addition of lubricant or for adding condensers to the medium to be pumped. Furthermore, it is also possible to use the secondary pump as a flushing pump for a mechanical seal.
- the first output shaft and the second output shaft are driven and synchronized by at least one motor via an elastic element.
- an elastic element an endless, flexible element or at least one elastically coated gear can be used.
- the endless, flexible element is picked up by a device Held tension. Furthermore, with this device at least one
- Figure 1 shows schematically the structure of a rotary lobe pump according to the invention with drive and synchronization device.
- FIG. 2 schematically shows a rotary lobe pump with the pump housing open.
- Figure 3 shows the schematic structure of a drive and synchronizing device with separate clamping device.
- FIG. 4 shows schematically how the drive and synchronizing device can be tensioned without a separate tensioning device.
- FIGS. 5a to 5c show various exemplary embodiments for arranging the motor for the rotary piston pump.
- Figure 6a shows schematically the structure of a rotary piston pump, wherein the elastic element is a plastic-coated gear.
- Figure 6b shows schematically the structure of a rotary piston pump, wherein the elastic member is a toothed belt, which drives a gear on the first output shaft.
- Figure 7 shows schematically the course of the endless, flexible element with free Trumetz between the driven wheels.
- FIG. 1 schematically shows the structure of a rotary piston pump 20 with a drive and synchronizing device 25 according to the invention.
- a motor 22 is located above a pump housing 26 arranged.
- the motor 22 is connected to a drive shaft 23 which moves a drive wheel 24.
- an elastic element 44 is rotationally driven.
- a first motor 22 is located above a pump housing 26 arranged.
- the motor 22 is connected to a drive shaft 23 which moves a drive wheel 24.
- an elastic element 44 is rotationally driven.
- about the elastic member 44 are a first
- the first output gear 42 is connected to a first output shaft 40 and the second output gear 43 is connected to a second output shaft 41 positively and / or non-positively.
- the rotary pistons (see FIG. 2) are driven via the first output shaft 40 and via the second output shaft 41.
- FIG. 2 schematically shows a rotary piston pump 20 with the pump housing 26 open.
- the motor 22 is mounted above the pump housing 26.
- the drive and synchronizing device 25 only one mounting plate 21 can be seen in FIG.
- the rotary piston 32 In the pump housing 26 are the rotary piston 32.
- a rotary piston 32 is of the first output shaft 40 and the second
- Rotary piston 32 driven by the second output shaft 41.
- FIG. 3 shows the schematic structure of a drive and synchronizing device 25 with a separate tensioning device 34.
- the drive wheel 24 Via the drive shaft 23, the drive wheel 24 is driven, which transmits the rotational forces of the drive shaft 23 to the elastic member 44.
- the elastic member 44 a double toothed belt, drives the first driven gear 42 and the second driven gear 43, and the first driven gear 42 rotates the first output shaft 40 and the second driven gear 43 rotates the second output shaft 41. So that the elastic element 44 always has the correct tension, it is held in tension by the tensioning device 34.
- the strength of the bias is adjustable via a clamping element 36. Since the first output shaft 40 and the second output shaft 41 must rotate in opposite directions, the first output gear 42 is driven from the outside of the elastic member 44 and the second output gear 43 from the inside of the elastic member 44. This intervention change happens in area 48 between the
- FIG. 4 schematically shows a drive and synchronizing device 25 without a separate tensioning device.
- the elastic member 44 is led directly from the drive wheel 24 to the first driven gear 42. From there it is transferred via the region 48 to the second driven gear 43.
- the motor 22 is moved with drive shaft 23 and the drive wheel 24 in this embodiment. With the clamping element 36, the motor 22 is moved away so far from the drive wheels 42 and 43 until the necessary bias of the elastic member 44 is present.
- FIGS. 5 a to 5 c show various exemplary embodiments for arranging the motor 22 for the rotary piston pump 20.
- FIG 5a schematically a laterally offset to the drive and synchronizing device 25 motor 22 is shown.
- a tension roller 38 is provided, which holds the elastic member 44 under bias.
- the fact that the motor 22 is mounted laterally offset increases the length of the elastic member 44, whereby the use of a tensioning device 34 is essential.
- FIG. 5b is a driving and synchronizing device 25 for a
- Rotary pump shown, in which the motor 22 is not arranged in close proximity to the drive and synchronizer 25.
- the motor 22 is not arranged in close proximity to the drive and synchronizer 25.
- FIG. 5 c shows schematically how a rotary piston pump (not shown here) can be configured, which is driven by two motors 22.
- a rotary piston pump (not shown here) can be configured, which is driven by two motors 22.
- Embodiment two motors 22 are arranged above the drive and synchronizer 25.
- Each of the two motors 22 has a separate drive shaft 23 and a drive wheel 24 associated with the drive shaft 23.
- the elastic element 44 extends over the two drive wheels 24 and is guided from there to the first driven gear 42 and the second driven gear 43.
- the bias for the elastic member 44 is generated by one of the motors 22 being movably connected to the driving and synchronizing device 25.
- the movable motor 22 is displaced until the elastic member 44 has the required tension.
- Figure 6a shows schematically the structure of a rotary piston pump 20, wherein the elastic member 44 is a plastic coated gear. As in the embodiments in Figures 1 and 2, the motor 22 is above the
- FIG. 6 b schematically shows the structure of a rotary piston pump 20, in which the elastic element 44 is a toothed belt which drives a toothed wheel 46 on the first output shaft 40.
- the elastic member 44 is rotationally moved by the motor 22 via the drive wheel 24. This movement is transmitted from the elastic member 44 to a gear 46 disposed on the first output shaft 40.
- the first output gear 42 and the first rotary piston which is located in the pump housing 26, driven. From the first driven gear 42, the movement is transmitted to the second driven gear 43.
- the second output gear 43 is on the second output shaft 41
- FIG. 7 schematically shows the course of the endless, flexible element 44, with free strand length Xi, between the driven wheels 42 and 43.
- Truminate Xi is determined by the design of the effective radii Ri of the driven wheels 42 and 43. The greater the effective radii Ri of the driven wheels 42 and 43, the lower is the free strand length Xi. Another way to vary the length of the free strand Xi is to change a distance A between the first output shaft 40 and the second output shaft 41. In the embodiment described in FIG. 8, a relatively large free strand length Xi is shown due to the low effective radii Ri of the output wheels 42 and 43. This results in a relatively large Verwindungsmöaige ⁇ the driven wheels.
- the invention has been described with reference to a preferred embodiment. However, it will be apparent to those skilled in the art that modifications or changes may be made to the invention without departing from the scope of the following claims.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010014218.2A DE102010014218B4 (de) | 2010-04-08 | 2010-04-08 | Drehkolbenpumpe und Verfahren zum Betreiben einer Drehkolbenpumpe |
PCT/DE2011/000373 WO2011124213A2 (de) | 2010-04-08 | 2011-04-06 | Drehkolbenpumpe und verfahren zum betreiben einer drehkolbenpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2556256A2 true EP2556256A2 (de) | 2013-02-13 |
EP2556256B1 EP2556256B1 (de) | 2020-01-15 |
Family
ID=44581851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11729047.8A Active EP2556256B1 (de) | 2010-04-08 | 2011-04-06 | Drehkolbenpumpe und verfahren zum betreiben einer drehkolbenpumpe |
Country Status (12)
Country | Link |
---|---|
US (1) | US9028233B2 (de) |
EP (1) | EP2556256B1 (de) |
CN (1) | CN103119301B (de) |
AU (1) | AU2011238240B2 (de) |
BR (1) | BR112012025726B1 (de) |
CL (1) | CL2012002795A1 (de) |
DE (1) | DE102010014218B4 (de) |
MX (1) | MX2012011670A (de) |
MY (1) | MY169995A (de) |
SG (1) | SG184424A1 (de) |
WO (1) | WO2011124213A2 (de) |
ZA (1) | ZA201207383B (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN203783890U (zh) * | 2014-04-11 | 2014-08-20 | 陈洪亮 | 双转子回转式容积泵 |
DE102014117166B4 (de) * | 2014-11-24 | 2016-07-07 | Netzsch Pumpen & Systeme Gmbh | Drehkolbenpumpe, verfahren zur fixierung von drehkolben einer drehkolbenpumpe und verfahren zur demontage von drehkolben einer drehkolbenpumpe |
TWM531986U (zh) * | 2016-05-18 | 2016-11-11 | 復盛股份有限公司 | 渦卷式空壓機 |
WO2021228355A1 (fr) * | 2020-05-11 | 2021-11-18 | Ateliers Busch Sa | Pompe à vide sèche |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2745355A (en) * | 1953-06-01 | 1956-05-15 | Roper Corp Geo D | Pump or fluid motor of the gear type |
GB1390013A (en) * | 1971-03-11 | 1975-04-09 | Plenty Son Ltd | Automatic belt tensioning device |
DE2558074C3 (de) * | 1975-12-22 | 1981-04-30 | Manfred 7141 Beilstein Streicher | Rotationskolbenpumpe |
US4674960A (en) * | 1985-06-25 | 1987-06-23 | Spectra-Physics, Inc. | Sealed rotary compressor |
GB2207190A (en) | 1987-07-18 | 1989-01-25 | Boc Group Plc | Pump drive arrangement |
DE3825372A1 (de) | 1988-07-26 | 1990-02-01 | Armin Mylaeus | Drehkolbenmaschine |
US4969857A (en) * | 1989-10-03 | 1990-11-13 | Kumm Industries, Inc. | Variable speed accessory drive |
JPH06185483A (ja) * | 1991-12-02 | 1994-07-05 | Shinku Kiko Kk | ドライメカニカルブースタポンプ |
DE19711510B4 (de) * | 1997-03-19 | 2005-03-17 | Aerzener Maschinenfabrik Gmbh | Schraubenverdichter |
DE19806657C2 (de) | 1998-02-18 | 2000-08-10 | Boerger Gmbh | Rotorpumpe |
US6478560B1 (en) * | 2000-07-14 | 2002-11-12 | Ingersoll-Rand Company | Parallel module rotary screw compressor and method |
DE10146612B4 (de) * | 2001-09-21 | 2016-09-01 | Schaeffler Technologies AG & Co. KG | Spannvorrichtung |
DE10334481A1 (de) * | 2003-07-29 | 2005-03-17 | Steffens, Ralf, Dr. | Antrieb einer Spindelvakuumpumpe |
US7216621B2 (en) * | 2004-05-26 | 2007-05-15 | General Motors Corporation | Double sheave accessory drive pulley |
DE102005062892B3 (de) | 2005-12-29 | 2007-06-14 | Greve, Günther | Rotationskolbenmaschine mit elliptischem Hülltrieb zur Bewegungssteuerung |
JP2008138549A (ja) | 2006-11-30 | 2008-06-19 | Anest Iwata Corp | 2軸以上の回転軸を配した無給油流体機械本体を有する無給油流体機械 |
AT506908B1 (de) * | 2007-12-14 | 2010-02-15 | High Tech Coatings Gmbh | Verfahren zur herstellung einer polymerbeschichtung |
-
2010
- 2010-04-08 DE DE102010014218.2A patent/DE102010014218B4/de active Active
-
2011
- 2011-04-06 MY MYPI2012004481A patent/MY169995A/en unknown
- 2011-04-06 WO PCT/DE2011/000373 patent/WO2011124213A2/de active Application Filing
- 2011-04-06 CN CN201180017558.5A patent/CN103119301B/zh active Active
- 2011-04-06 MX MX2012011670A patent/MX2012011670A/es active IP Right Grant
- 2011-04-06 SG SG2012073490A patent/SG184424A1/en unknown
- 2011-04-06 EP EP11729047.8A patent/EP2556256B1/de active Active
- 2011-04-06 AU AU2011238240A patent/AU2011238240B2/en not_active Ceased
- 2011-04-06 BR BR112012025726-9A patent/BR112012025726B1/pt active IP Right Grant
-
2012
- 2012-10-02 ZA ZA2012/07383A patent/ZA201207383B/en unknown
- 2012-10-05 US US13/646,364 patent/US9028233B2/en active Active
- 2012-10-05 CL CL2012002795A patent/CL2012002795A1/es unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2011124213A2 * |
Also Published As
Publication number | Publication date |
---|---|
CN103119301B (zh) | 2016-08-03 |
BR112012025726B1 (pt) | 2020-11-24 |
US9028233B2 (en) | 2015-05-12 |
MY169995A (en) | 2019-06-19 |
CL2012002795A1 (es) | 2013-03-01 |
DE102010014218A1 (de) | 2011-10-13 |
EP2556256B1 (de) | 2020-01-15 |
BR112012025726A2 (pt) | 2016-07-19 |
US20130094985A1 (en) | 2013-04-18 |
AU2011238240B2 (en) | 2015-07-16 |
ZA201207383B (en) | 2013-06-26 |
MX2012011670A (es) | 2012-12-17 |
WO2011124213A2 (de) | 2011-10-13 |
DE102010014218B4 (de) | 2018-09-13 |
SG184424A1 (en) | 2012-11-29 |
WO2011124213A3 (de) | 2013-03-21 |
CN103119301A (zh) | 2013-05-22 |
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Legal Events
Date | Code | Title | Description |
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