DE29909100U1 - Pipe arrangement with filter - Google Patents
Pipe arrangement with filterInfo
- Publication number
- DE29909100U1 DE29909100U1 DE29909100U DE29909100U DE29909100U1 DE 29909100 U1 DE29909100 U1 DE 29909100U1 DE 29909100 U DE29909100 U DE 29909100U DE 29909100 U DE29909100 U DE 29909100U DE 29909100 U1 DE29909100 U1 DE 29909100U1
- Authority
- DE
- Germany
- Prior art keywords
- main line
- pump
- line section
- filter
- arrangement according
- 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.)
- Expired - Lifetime
Links
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 description 7
- 230000005291 magnetic effect Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000005292 diamagnetic effect Effects 0.000 description 2
- 230000001914 calming effect Effects 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/24—Preventing accumulation of dirt or other matter in pipes, e.g. by traps, by strainers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/117—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
- B01D29/606—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by pressure measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/90—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/06—Filters making use of electricity or magnetism
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/12—Devices for taking out of action one or more units of multi- unit filters, e.g. for regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/147—Bypass or safety valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/153—Anti-leakage or anti-return valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/26—Filters with built-in pumps filters provided with a pump mounted in or on the casing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/025—High gradient magnetic separators
- B03C1/031—Component parts; Auxiliary operations
- B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
- B03C1/0332—Component parts; Auxiliary operations characterised by the magnetic circuit using permanent magnets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/28—Magnetic plugs and dipsticks
- B03C1/286—Magnetic plugs and dipsticks disposed at the inner circumference of a recipient, e.g. magnetic drain bolt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/28—Magnetic plugs and dipsticks
- B03C1/288—Magnetic plugs and dipsticks disposed at the outer circumference of a recipient
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/18—Magnetic separation whereby the particles are suspended in a liquid
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Water Treatment By Sorption (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtering Materials (AREA)
- Pipeline Systems (AREA)
Description
Rohrleltungsanordnung mit FilterPipeline arrangement with filter
Die Erfindung betrifft eine Rohrleitungsanordnung mit einem Filter, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a pipeline arrangement with a filter, according to the preamble of claim 1.
Rohrleitungssysteme dienen unter anderem dem Zweck, gasförmige oder flüssige Medien zu befördern. Bei Wärmetauschern kommen Kühlflüssigkeiten zum Einsatz. Bei Heizungsanlagen ist Wasser das zur Wärmeübertragung verwendete Fluid. Dabei läßt es sich nie gänzlich vermeiden, daß durch Korrosion an den Rohrleitungen Partikel von den Rohrleitungswandungen abgelöst werden und durch das Rohrleitungssystem zirkulieren. Hierdurch kann es zu Beeinträchtigungen der Zuverlässigkeit an den Armaturen, Meßfühlern und sonstigen Aggregaten kommen.One of the purposes of piping systems is to transport gaseous or liquid media. Cooling fluids are used in heat exchangers. In heating systems, water is the fluid used to transfer heat. It can never be completely avoided that corrosion on the pipes causes particles to be detached from the pipe walls and circulate through the pipe system. This can impair the reliability of the fittings, sensors and other units.
Um derartige Beeinträchtigungen und Störungen, die im schlimmsten Fall zum Totalausfall der Anlage führen können, zu vermeiden, werden Filter in die zu schützenden Rohrleitungssysteme eingebaut. Um den Heizungsbetrieb während der Reinigung oder des Austausches des verschmutzten Filters nicht unterbrechen zu müssen, weisen bekannte Filteranordnungen vorzugsweise eine Bypaßleitung auf.In order to avoid such impairments and malfunctions, which in the worst case can lead to a total failure of the system, filters are installed in the pipe systems to be protected. In order not to have to interrupt the heating operation during cleaning or replacement of the dirty filter, known filter arrangements preferably have a bypass line.
Damit es zu keiner Unterbrechung der Förderung kommt, steht dann bei abgeklemmtem Filter-Rohrleitungsstrang die zuzuschaltende Umgehungs- bzw. Bypaßleitung zur Verfügung.To ensure that there is no interruption in the flow, the bypass line can be switched on when the filter pipe is disconnected.
Die österreichische Patentschrift AT-PS 397 297 beschreibt eine solche Rohrleitungsanordnung mit Hauptleitungsabschnitt und parallel angeordneter Bypaßleitung. Die Leitungsabschnitte weisen endseitig jeweils Absperrorgane auf.The Austrian patent AT-PS 397 297 describes such a pipeline arrangement with a main line section and a parallel bypass line. The line sections each have shut-off devices at the end.
Mach der AT-PS 397 297 sind als Absperrorgane für den Hauptleitungsabschnitt beidends an den Leitungsabschnitt angesetzte Kehrwegeventile vorgesehen, an denen dann auch die Bypaßleitung liegt, deren Durchgängigkeit über die Ventile beim Abwerfen des Hauptleitungsabschnitts hergestellt wird. Mehrwegeventile sind vergleichsweise kostspielig. Betätigt werden müssen beide Ventile mit dem Risiko, daß das Betätigen eines der Ventile übersehen wird, was zumal beim Abwerfen des Hauptleitungsabschnitts Gefahren heraufbeschwören kann.According to AT-PS 397 297, reversing valves are provided as shut-off devices for the main line section, which are attached to both ends of the line section, and to which the bypass line is then also connected, the continuity of which is established via the valves when the main line section is dropped. Multi-way valves are comparatively expensive. Both valves must be operated, with the risk that the operation of one of the valves is overlooked, which can be dangerous, especially when the main line section is dropped.
TJm ein einwandfreies Abwerfen des Hauptleitungsabschnitts zu gewährleisten, schlägt die deutsche Offenlegungsschrift DE 195 45 446 Al als abgangsseitiges Absperrorgan ein Rückschlagventil vor, das bei an seinem Schließkörper anstehendem Schließdruck in Richtung auf den absperrbaren Leitungsabschnitt selbsttätig schließt und/oder in seiner Schließlage blockiert. In dem eingegrenzten Hauptleitungsabschnitt befindet sich ein Filter. Außerdem kann der Hauptleitungsabschnitt Rohrstutzen für Meßeinrichtungen aufweisen. Insbesondere kann vor und hinter dem Filter jeweils ein Manometer angeordnet sein. Um den Verschmutzungsgrad des Filters feststellen zu können, ist die Druckdifferenz der von den Manometern angezeigten Drücke zu bestimmen.To ensure that the main line section is discharged properly, the German patent application DE 195 45 446 A1 proposes a check valve as the shut-off device on the outlet side, which automatically closes and/or blocks in its closed position when the closing pressure is applied to its closing body in the direction of the shut-off line section. A filter is located in the restricted main line section. In addition, the main line section can have pipe sockets for measuring devices. In particular, a pressure gauge can be arranged in front of and behind the filter. In order to be able to determine the degree of contamination of the filter, the pressure difference between the pressures displayed by the pressure gauges must be determined.
Anstelle eines Filters kann auch eine Pumpe in den Leitungsabschnitt integriert sein. Soll sowohl ein Filter als auch eine Pumpe in den Heizungskreislauf integriert werden, so ist die Verwendung jeweils eines absperrbarenInstead of a filter, a pump can also be integrated into the pipe section. If both a filter and a pump are to be integrated into the heating circuit, a lockable
Leitungsabschnitts für das Filter und ein weiterer absperrbarer Leitungsabschnitt für die Pumpe erforderlich. Die Vielzahl der somit notwendigen Bauelemente, wie Absperrorgane usw. stellt eine beträchtliche Verteuerung der Anlage dar. Außerdem erfordern die diversen, separat absperrbaren Leitungsabschnitte zusätzlichen Bauraum, der häufig nicht vorhanden ist.A pipe section for the filter and another lockable pipe section for the pump are required. The large number of components required, such as shut-off devices, etc., makes the system considerably more expensive. In addition, the various pipe sections that can be separately locked require additional installation space, which is often not available.
Hier will die Erfindung Abhilfe schaffen, indem sie gemäß Anspruch 1 eine hochwirksame, kompakte und kostengünstige Filtervorrichtung beschreibt.The invention aims to remedy this by describing a highly effective, compact and cost-effective filter device according to claim 1.
Bevorzugte Ausführungsformen ergeben sich aus den Unteransprüchen.Preferred embodiments emerge from the subclaims.
Erfindungsgemäß sind Filter und Pumpe in einem gemeinsamen
Gehäuse untergebracht. Dieses gemeinsame Gehäuse ist wiederum Teil des Hauptleitungsabschnitts. Auf diese Weise
ergibt sich eine besonders kompakte Bauweise. Im Saugbereich der Pumpe weist die Rohrleitung eine
Querschnittserweiterung auf. Hierdurch ergibt sich eine
gewisse Strömungsberuhigung, wodurch es den Schmutzpartikeln erleichtert wird, sich an dem hier
angeordneten Filtersieb abzusetzen.
Ein in das Filter integrierter Magnetitabscheider besteht
aus einem Magnetstab, der aus mehreren axial zueinander angeordneten und zueinander entgegengesetzt magnetisierten
Scheiben zusammengesetzt ist. Hierdurch ergeben sich nicht nur an den Stabenden sondern auch an den jeweiligen
Nahtstellen austretende Kraftlinien, so daß sich dementsprechend über die gesamte Länge des Magnetstabes
Eisenoxid-Teilchen auf einer diamagnetischen Hülse des
Magnetstabes absetzen können. Nach Schließen des eingangsseitigen Absperrorgans, d. h. nach Umlegen der
Dreiwegearmatur auf den Bypaß, und nach Herausziehen desAccording to the invention, the filter and pump are housed in a common housing. This common housing is in turn part of the main line section. This results in a particularly compact design. In the suction area of the pump, the pipe has a cross-sectional expansion. This results in a certain calming of the flow, which makes it easier for the dirt particles to settle on the filter screen arranged here.
A magnetite separator integrated into the filter consists of a magnetic rod, which is made up of several disks arranged axially to one another and magnetized in opposite directions. This results in lines of force emerging not only at the ends of the rods but also at the respective seams, so that iron oxide particles can settle on a diamagnetic sleeve of the magnetic rod over the entire length of the magnetic rod. After closing the shut-off device on the inlet side, ie after moving the three-way valve to the bypass, and after pulling out the
Magnetstabes aus der diamagnetischen Hülse, kann der sich im Filter abgesetzte Magnetschlamm problemlos abgelassen und das Filter gereinigt werden.By removing the magnetic rod from the diamagnetic sleeve, the magnetic sludge that has settled in the filter can be easily drained and the filter cleaned.
Vorzugsweise befindet sich vor und hinter dem Filter jeweils ein Rohrstutzen, die beide durch ein Differenzdruckmanometer miteinander verbunden sind. Erreicht der Differenzdruck einen vorgegebenen "roten" Bereich, so ist die Durchlässigkeit des Filters behindert und das Filtersieb sollte gesäubert bzw. ausgewechselt werden. D. h.: Eine Reinigung des Filters braucht nicht turnusmäßig in bestimmten zeitlichen Intervallen sondern nur noch dann vorgenommen zu werden, wenn durch den erhöhten Differenzdruck eine Verschmutzung tatsächlich angezeigt wird.Preferably there is a pipe socket in front of and behind the filter, both of which are connected to each other by a differential pressure gauge. If the differential pressure reaches a specified "red" range, the permeability of the filter is restricted and the filter screen should be cleaned or replaced. This means that the filter does not need to be cleaned at regular intervals, but only when the increased differential pressure actually indicates contamination.
Um sicherzustellen, daß die Pumpe immer nur dann eingeschaltet ist, wenn das dem Leitungsabschnitt zugeordnete Absperrorgan geöffnet ist, ist gemäß einer bevorzugten Ausgestaltung der Erfindung die Pumpe in entsprechender Weise mit dem eingangsseitigen Absperrorgan gekoppelt.In order to ensure that the pump is only switched on when the shut-off device assigned to the line section is open, according to a preferred embodiment of the invention the pump is coupled in a corresponding manner to the shut- off device on the inlet side.
Eine Weiterbildung der erfindungsgemäßen Rohrleitungsanordnung sieht vor, auch die Bypaßleitung mit Filter und Pumpe auszustatten. In diesem Fall wäre auch die Bypaßleitung vorzugsweise mit einem Rückschlagventil zu versehen. Im Falle eines Defekts an der im Hauptleitungsabschnitt befindlichen Pumpe wäre somit über die Umschaltung auf den Bypaß ein einwandfreier Betrieb der Heizungsanlage gewährleistet.A further development of the piping arrangement according to the invention provides for the bypass line to be equipped with a filter and pump. In this case, the bypass line would also preferably be equipped with a check valve. In the event of a defect in the pump in the main line section, the smooth operation of the heating system would thus be ensured by switching to the bypass.
Durch eine Kopplung der beiden Pumpen mit der Dreiwegearmatur wird sichergestellt, daß nur jeweils diejenige Pumpe läuft, deren Strang offen ist.By coupling the two pumps with the three-way valve, it is ensured that only the pump whose line is open is running.
Anhand der beigefügten Zeichnungen wird die Erfindung naher beschrieben. Es zeigt:The invention is described in more detail using the attached drawings. It shows:
Fig. la und Ib zwei Längsschnitte durch eine Rohrleitungsanordnung in zwei zueinander orthogonalen Ebenen,Fig. la and 1b two longitudinal sections through a piping arrangement in two mutually orthogonal planes,
Fig. 2, 3 und 4 Prinzipdarstellungen von weiteren bevorzugten Ausführungsformen.Fig. 2, 3 and 4 are schematic representations of further preferred embodiments.
Die in Fig. 1 dargestellte Rohrleitungsanordnung 2 zeigt einen Hauptleitungsabschnitt 4 und eine zu dem Hauptleitungsabschnitt 4 parallele Bypaßleitung 6. Eingangsseitig befindet sich eine als Dreiwegearmatur (Hahn bzw. Ventil) ausgebildetes Absperrorgan 8, an dessen einem sperrbaren Sitz der absperrbare Hauptleitungsabschnitt 4 und an dessen anderem sperrbaren Sitz die Bypaßleitung 6 liegt. Ausgangssei tig befindet sich ebenfalls ein Absperrorgan 10a. Dieses Absperrorgan 10a ist ein bei an seinem Schließkörper anstehendem Schiießdruck in Richtung auf den absperrbaren Hauptleitungsabschnitt 4 schließendes und/oder in seiner Schließlage blockierbares Rückschlagventil. Hinter dessen Schließkörper läuft die Bypaßleitung 6 aus.The pipe arrangement 2 shown in Fig. 1 shows a main line section 4 and a bypass line 6 parallel to the main line section 4. On the inlet side there is a shut-off device 8 designed as a three-way fitting (cock or valve), on one lockable seat of which the lockable main line section 4 is located and on the other lockable seat of which the bypass line 6 is located. On the outlet side there is also a shut-off device 10a. This shut-off device 10a is a check valve that closes in the direction of the lockable main line section 4 when there is closing pressure on its closing body and/or can be blocked in its closed position. The bypass line 6 runs out behind its closing body.
In dem Hauptleitungsabschnitt 4 ist in einem gemeinsamen Gehäuse 16 ein Filter 12a und eine Pumpe 14a integriert.In the main line section 4, a filter 12a and a pump 14a are integrated in a common housing 16.
Das Filter 12a, das im Saugbereich 20 der zugeordneten Pumpe 14a angeordnet ist, weist ein zylindrisches Sieb auf, das aus einem Drahtgeflecht besteht. Das zylindrische Filtersieb 22 umschließt einen koaxial angeordneten Magnetitabscheider 24.The filter 12a, which is arranged in the suction area 20 of the associated pump 14a, has a cylindrical sieve consisting of a wire mesh. The cylindrical filter sieve 22 encloses a coaxially arranged magnetite separator 24.
Der erfindungsgemaßen Rohrleitungsanordnung vorgeschaltet ist üblicherweise eine gemeinsame (Kessel—>Pumpe 32, Bei Heizungsanlagen mit mehreren Kreisen 30, 30' , . . . versorgtThe piping arrangement according to the invention is usually preceded by a common (boiler—>pump 32, in heating systems with several circuits 30, 30', . . . supplied
diese gemeinsame (Kessel->Pumpe 32 auch die anderen Kreise 30' ....this common (boiler->pump 32 also the other circuits 30' ....
Vährend der Vartungsarbeiten, d. h. , wenn zwecks Reinigung des Filters 12a der Hauptleitungsabschnitt 4 stillgelegt ist und die eingangsseitige Dreiwegearmatur 8 die BypaBleitung 6 auf "Durchgang" gestellt hat, hält die (gemeinsame) Pumpe 32 den betreffenden Kreis 30 über die Bypaßleitung 6 aufrecht.During maintenance work, i.e. when the main line section 4 is shut down for cleaning the filter 12a and the inlet-side three-way valve 8 has set the bypass line 6 to "through", the (common) pump 32 maintains the relevant circuit 30 via the bypass line 6.
Wie aus der in Fig. 2 dargestellten Prinzipskizze hervorgeht, kann die im Hauptleitungsabschnitt 4 befindliche Pumpe 14a mit dem eingangsseitigen Dreiwegeventil 8 gekoppelt sein (Kopplung 18a). Dabei ist die Pumpe 14a stets dann eingeschaltet, wenn das Dreiwegeventil 8 den Hauptabschnitt 4 geöffnet hält und wobei die Pumpe 14a abgeschaltet ist, solange der Hauptleitungsabschnitt 4 geschlossen ist.As can be seen from the schematic diagram shown in Fig. 2, the pump 14a located in the main line section 4 can be coupled to the three-way valve 8 on the input side (coupling 18a). The pump 14a is always switched on when the three-way valve 8 keeps the main section 4 open and the pump 14a is switched off as long as the main line section 4 is closed.
Ebenso wie der Hauptleitungsabschnitt 4 kann auch die Bypaßleitung 6 mit Filter 12b und Pumpe 14b ausgestattet sein (Fig. 3). In diesem Fall weist die Bypaßleitung 6 ebenso wie der Hauptleitungsabschnitt 4 - ein Rückschlagventil 10b auf.Just like the main line section 4, the bypass line 6 can also be equipped with a filter 12b and a pump 14b (Fig. 3). In this case, the bypass line 6, like the main line section 4, has a check valve 10b.
Im vorliegenden Fall, wo sowohl der Hauptleitungsabschnitt 4 als auch die Bypaßleitung 6 jeweils mit einer Pumpe 14a, 14b versehen ist, kann auf eine gemeinsame (Kessel—)Pumpe 32 verzichtet werden.In the present case, where both the main line section 4 and the bypass line 6 are each provided with a pump 14a, 14b, a common (boiler) pump 32 can be dispensed with.
Um zu vermeiden, daß die jeweilige Pumpe 14a bzw. 14b auch bei abgesperrtem Leitungsabschnitt läuft, sind die im Hauptleitungsabschnitt 4 und in der Bypaßleitung 6 befindlichen Pumpen 14a, 14b in der Weise mit dem Dreiwegeventil 8 gekoppelt (Kopplung 18b), daß die im Hauptleitungsabschnitt 4 befindliche Pumpe 14a immer dannIn order to prevent the respective pump 14a or 14b from running even when the line section is shut off, the pumps 14a, 14b located in the main line section 4 and in the bypass line 6 are coupled to the three-way valve 8 (coupling 18b) in such a way that the pump 14a located in the main line section 4 always
eingeschaltet ist, wenn das Dreiwegeventil 8 den Hauptleitungsabschnitt 4 geöffnet hält, und daß die in der Bypaßleitung 6 befindliche Pumpe 14b eingeschaltet ist, wenn das Dreiwegeventil 8 die Bypaßleitung 6 geöffnet hält. 5is switched on when the three-way valve 8 keeps the main line section 4 open, and that the pump 14b located in the bypass line 6 is switched on when the three-way valve 8 keeps the bypass line 6 open. 5
In den Fig. 2, 3 und 4 befindet sich vor und hinter den Filtern 12a, 12b jeweils ein Rohrstutzen 26a, 26b zur Aufnahme von Differenzdruckmanometern 28a, 28b.In Fig. 2, 3 and 4, there is a pipe socket 26a, 26b in front of and behind the filters 12a, 12b for accommodating differential pressure gauges 28a, 28b.
Das Besondere an der Anordnung gemäß Fig. 4 besteht darin, daß sich im gemeinsamen <Zuleitungs-)Strang 30 eine (gemeinsame) Umwälzpumpe 32 befindet. Auch hier sind die Filter 12a, 12b jeweils mit einem Differenzdruckmanometer 28a, 28b versehen.The special feature of the arrangement according to Fig. 4 is that a (common) circulation pump 32 is located in the common <supply line) branch 30. Here too, the filters 12a, 12b are each provided with a differential pressure gauge 28a, 28b.
Sowohl im Hauptleitungsabschnitt 4 als auch in der Bypaßleitung 6 wurde in diesem Ausführungsbeispiel auf <Umwälz~)Pumpen verzichtet.In this embodiment, no <circulation pumps> were used in either the main line section 4 or the bypass line 6.
Rolirleitungsaiiordnung mit Filter BezugszeichenlisteRoller line arrangement with filter List of reference symbols
2 Rohrleitungsanordnung 4 Hauptleitungsabschnitt 6 Bypaßleitung 8 eingangsseitiges Absperrorgan2 Pipeline arrangement 4 Main line section 6 Bypass line 8 Inlet-side shut-off device
(Dreiwegearmatur, Dreiwegeventil)(three-way fitting, three-way valve)
10a, 10b abgangsseitiges Absperrorgan (Rückschlagventil) 12a, 12b Filter 14a, 14b Pumpe 16 (gemeinsames) Gehäuse 18a Kopplung Dreiwegearmatur/Pumpe 18b Kopplung Pumpe/Dreiwegearmatur/Pumpe 20 Saugbereich der Pumpe 22 zylindrisches Sieb 24, Magnetitabscheider 26a, 26b Rohrstutzen 28a, 28b Differenzdruckmanometer 30 (Zuleitungs-)Strang, Heizungskreis 30, 30', ... Heizungskreise 32 (gemeinsame) Pumpe, (Kessel-)Pumpe10a, 10b outlet-side shut-off device (check valve) 12a, 12b filter 14a, 14b pump 16 (common) housing 18a coupling three-way valve/pump 18b coupling pump/three-way valve/pump 20 suction area of the pump 22 cylindrical sieve 24, magnetite separator 26a, 26b pipe socket 28a, 28b differential pressure gauge 30 (supply) line, heating circuit 30, 30', ... heating circuits 32 (common) pump, (boiler) pump
Claims (10)
15that a magnetite separator <24) is integrated into the filter <12a, 12b).
15
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29909100U DE29909100U1 (en) | 1999-05-25 | 1999-05-25 | Pipe arrangement with filter |
| PCT/DE2000/001675 WO2000071897A1 (en) | 1999-05-25 | 2000-05-24 | Pipeline arrangement with a filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29909100U DE29909100U1 (en) | 1999-05-25 | 1999-05-25 | Pipe arrangement with filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE29909100U1 true DE29909100U1 (en) | 1999-08-12 |
Family
ID=8073907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE29909100U Expired - Lifetime DE29909100U1 (en) | 1999-05-25 | 1999-05-25 | Pipe arrangement with filter |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE29909100U1 (en) |
| WO (1) | WO2000071897A1 (en) |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1235625A4 (en) * | 1999-11-30 | 2007-10-03 | Entegris Inc | Apparatus and methods for pumping high viscosity fluids |
| US7476087B2 (en) | 1998-11-23 | 2009-01-13 | Entegris, Inc. | Pump controller for precision pumping apparatus |
| US7494265B2 (en) | 2006-03-01 | 2009-02-24 | Entegris, Inc. | System and method for controlled mixing of fluids via temperature |
| US7547049B2 (en) | 2005-12-02 | 2009-06-16 | Entegris, Inc. | O-ring-less low profile fittings and fitting assemblies |
| DE102008045398A1 (en) | 2008-03-07 | 2009-09-24 | Meibes System-Technik Gmbh | Filter unit used to trap dirt particles carried in flow of central heating system, is arranged transversely with respect to main direction of flow |
| US7684446B2 (en) | 2006-03-01 | 2010-03-23 | Entegris, Inc. | System and method for multiplexing setpoints |
| US7850431B2 (en) | 2005-12-02 | 2010-12-14 | Entegris, Inc. | System and method for control of fluid pressure |
| US7878765B2 (en) | 2005-12-02 | 2011-02-01 | Entegris, Inc. | System and method for monitoring operation of a pump |
| US7897196B2 (en) | 2005-12-05 | 2011-03-01 | Entegris, Inc. | Error volume system and method for a pump |
| US7940664B2 (en) | 2005-12-02 | 2011-05-10 | Entegris, Inc. | I/O systems, methods and devices for interfacing a pump controller |
| US8025486B2 (en) | 2005-12-02 | 2011-09-27 | Entegris, Inc. | System and method for valve sequencing in a pump |
| US8029247B2 (en) | 2005-12-02 | 2011-10-04 | Entegris, Inc. | System and method for pressure compensation in a pump |
| US8083498B2 (en) | 2005-12-02 | 2011-12-27 | Entegris, Inc. | System and method for position control of a mechanical piston in a pump |
| US8087429B2 (en) | 2005-11-21 | 2012-01-03 | Entegris, Inc. | System and method for a pump with reduced form factor |
| US8172546B2 (en) | 1998-11-23 | 2012-05-08 | Entegris, Inc. | System and method for correcting for pressure variations using a motor |
| US8292598B2 (en) | 2004-11-23 | 2012-10-23 | Entegris, Inc. | System and method for a variable home position dispense system |
| US8753097B2 (en) | 2005-11-21 | 2014-06-17 | Entegris, Inc. | Method and system for high viscosity pump |
| US9631611B2 (en) | 2006-11-30 | 2017-04-25 | Entegris, Inc. | System and method for operation of a pump |
| EP3557109A1 (en) * | 2018-04-17 | 2019-10-23 | The Metraflex Company | Pipeline strainer with magnetic insert |
| IT201800010004A1 (en) * | 2018-11-02 | 2020-05-02 | Caleffi Spa | On-off valve with filter function for hydraulic applications |
| DE10228535B4 (en) | 2001-07-03 | 2021-09-16 | Vaillant Gmbh | Arrangement for the storage of a filter insert for a heating system |
| CN114046188A (en) * | 2021-12-01 | 2022-02-15 | 重庆科技学院 | Closed natural gas pipeline power generation and filtration device |
| DE102024200548A1 (en) | 2024-01-22 | 2025-07-24 | Robert Bosch Gesellschaft mit beschränkter Haftung | Filter exchange device, electrochemical system and method |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2391826A (en) * | 2002-08-13 | 2004-02-18 | Suzanne Paula Tracy Collings | A mechanical and magnetic particle separating device |
| GB2462685A (en) * | 2008-08-22 | 2010-02-24 | Christopher Adey | Pump arrangement with a centrifugal pump and magnetic separator |
| US20100229312A1 (en) | 2009-03-16 | 2010-09-16 | De Buzzaccarini Francesco | Cleaning method |
| US8900328B2 (en) | 2009-03-16 | 2014-12-02 | The Procter & Gamble Company | Cleaning method |
| US8449626B2 (en) | 2009-11-11 | 2013-05-28 | The Procter & Gamble Company | Cleaning method |
| CN103316534A (en) * | 2012-03-22 | 2013-09-25 | 上海金湖挤出设备有限公司 | Online filtering and cleaning system |
| IT201600119549A1 (en) * | 2016-11-25 | 2018-05-25 | Euroacque S R L | DEFANGER FILTER DEVICE |
| CN110560264B (en) * | 2019-10-05 | 2020-09-22 | 台州半城暖通科技有限公司 | Octagonal positioning magnetic filter |
| WO2021076870A1 (en) | 2019-10-16 | 2021-04-22 | Hoffman Enclosures, Inc. | Bypass strainer valve assembly and method |
| CN111503423B (en) * | 2020-05-08 | 2020-11-03 | 杭州唛唐智能科技有限公司 | Pipeline device with multipurpose auxiliary pipeline section |
| EP4116397A1 (en) | 2021-07-06 | 2023-01-11 | The Procter & Gamble Company | Whitening additive |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3403077C1 (en) * | 1984-01-30 | 1985-09-12 | Filterwerk Mann & Hummel Gmbh, 7140 Ludwigsburg | Switchable liquid filter |
| AT397297B (en) | 1991-05-22 | 1994-03-25 | Wlasto Walter | Pipeline system |
| DE19545446C2 (en) * | 1995-12-06 | 1999-08-05 | Rolf Pleuger | Both ends with a shut-off device provided with a shut-off bypass line leading around the line section |
-
1999
- 1999-05-25 DE DE29909100U patent/DE29909100U1/en not_active Expired - Lifetime
-
2000
- 2000-05-24 WO PCT/DE2000/001675 patent/WO2000071897A1/en not_active Ceased
Cited By (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7476087B2 (en) | 1998-11-23 | 2009-01-13 | Entegris, Inc. | Pump controller for precision pumping apparatus |
| US8172546B2 (en) | 1998-11-23 | 2012-05-08 | Entegris, Inc. | System and method for correcting for pressure variations using a motor |
| US7383967B2 (en) | 1999-11-30 | 2008-06-10 | Entegris, Inc. | Apparatus and methods for pumping high viscosity fluids |
| EP1235625A4 (en) * | 1999-11-30 | 2007-10-03 | Entegris Inc | Apparatus and methods for pumping high viscosity fluids |
| DE10228535B4 (en) | 2001-07-03 | 2021-09-16 | Vaillant Gmbh | Arrangement for the storage of a filter insert for a heating system |
| US9617988B2 (en) | 2004-11-23 | 2017-04-11 | Entegris, Inc. | System and method for variable dispense position |
| US8814536B2 (en) | 2004-11-23 | 2014-08-26 | Entegris, Inc. | System and method for a variable home position dispense system |
| US8292598B2 (en) | 2004-11-23 | 2012-10-23 | Entegris, Inc. | System and method for a variable home position dispense system |
| US8087429B2 (en) | 2005-11-21 | 2012-01-03 | Entegris, Inc. | System and method for a pump with reduced form factor |
| US9399989B2 (en) | 2005-11-21 | 2016-07-26 | Entegris, Inc. | System and method for a pump with onboard electronics |
| US8753097B2 (en) | 2005-11-21 | 2014-06-17 | Entegris, Inc. | Method and system for high viscosity pump |
| US8651823B2 (en) | 2005-11-21 | 2014-02-18 | Entegris, Inc. | System and method for a pump with reduced form factor |
| US9309872B2 (en) | 2005-12-02 | 2016-04-12 | Entegris, Inc. | System and method for position control of a mechanical piston in a pump |
| US9816502B2 (en) | 2005-12-02 | 2017-11-14 | Entegris, Inc. | System and method for pressure compensation in a pump |
| US8083498B2 (en) | 2005-12-02 | 2011-12-27 | Entegris, Inc. | System and method for position control of a mechanical piston in a pump |
| US8025486B2 (en) | 2005-12-02 | 2011-09-27 | Entegris, Inc. | System and method for valve sequencing in a pump |
| US8029247B2 (en) | 2005-12-02 | 2011-10-04 | Entegris, Inc. | System and method for pressure compensation in a pump |
| US7940664B2 (en) | 2005-12-02 | 2011-05-10 | Entegris, Inc. | I/O systems, methods and devices for interfacing a pump controller |
| US8382444B2 (en) | 2005-12-02 | 2013-02-26 | Entegris, Inc. | System and method for monitoring operation of a pump |
| US7547049B2 (en) | 2005-12-02 | 2009-06-16 | Entegris, Inc. | O-ring-less low profile fittings and fitting assemblies |
| US8662859B2 (en) | 2005-12-02 | 2014-03-04 | Entegris, Inc. | System and method for monitoring operation of a pump |
| US8678775B2 (en) | 2005-12-02 | 2014-03-25 | Entegris, Inc. | System and method for position control of a mechanical piston in a pump |
| US7878765B2 (en) | 2005-12-02 | 2011-02-01 | Entegris, Inc. | System and method for monitoring operation of a pump |
| US7850431B2 (en) | 2005-12-02 | 2010-12-14 | Entegris, Inc. | System and method for control of fluid pressure |
| US8870548B2 (en) | 2005-12-02 | 2014-10-28 | Entegris, Inc. | System and method for pressure compensation in a pump |
| US9025454B2 (en) | 2005-12-02 | 2015-05-05 | Entegris, Inc. | I/O systems, methods and devices for interfacing a pump controller |
| US9262361B2 (en) | 2005-12-02 | 2016-02-16 | Entegris, Inc. | I/O systems, methods and devices for interfacing a pump controller |
| US7897196B2 (en) | 2005-12-05 | 2011-03-01 | Entegris, Inc. | Error volume system and method for a pump |
| US7684446B2 (en) | 2006-03-01 | 2010-03-23 | Entegris, Inc. | System and method for multiplexing setpoints |
| US7946751B2 (en) | 2006-03-01 | 2011-05-24 | Entegris, Inc. | Method for controlled mixing of fluids via temperature |
| US7494265B2 (en) | 2006-03-01 | 2009-02-24 | Entegris, Inc. | System and method for controlled mixing of fluids via temperature |
| US9631611B2 (en) | 2006-11-30 | 2017-04-25 | Entegris, Inc. | System and method for operation of a pump |
| DE102008045398A1 (en) | 2008-03-07 | 2009-09-24 | Meibes System-Technik Gmbh | Filter unit used to trap dirt particles carried in flow of central heating system, is arranged transversely with respect to main direction of flow |
| EP3557109A1 (en) * | 2018-04-17 | 2019-10-23 | The Metraflex Company | Pipeline strainer with magnetic insert |
| US10967312B2 (en) | 2018-04-17 | 2021-04-06 | The Metraflex Company | Pipeline strainer with magnetic insert |
| IT201800010004A1 (en) * | 2018-11-02 | 2020-05-02 | Caleffi Spa | On-off valve with filter function for hydraulic applications |
| CN114046188A (en) * | 2021-12-01 | 2022-02-15 | 重庆科技学院 | Closed natural gas pipeline power generation and filtration device |
| CN114046188B (en) * | 2021-12-01 | 2023-06-06 | 重庆科技学院 | A closed natural gas pipeline power generation and filtering device |
| DE102024200548A1 (en) | 2024-01-22 | 2025-07-24 | Robert Bosch Gesellschaft mit beschränkter Haftung | Filter exchange device, electrochemical system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000071897A1 (en) | 2000-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE29909100U1 (en) | Pipe arrangement with filter | |
| DE60125914T2 (en) | DISPOSABLE FLUID TRUNKING DEVICE AND DISTRIBUTION SYSTEM WITH EASILY INTERCHANGEABLE COMPONENT | |
| DE102012106957B4 (en) | Food arrangement for heating systems | |
| EP3434984B1 (en) | Heating filter arrangement | |
| DE69717202T2 (en) | Shut-off valve with built-in expansion nozzle for pressurized circulating agents in a heating and cooling system for air | |
| EP0260649B1 (en) | Method for the internal cleaning of branched pipings and/or units, and device for carrying out this method | |
| EP0350017B1 (en) | Valve with a leak indicator | |
| DE102012025706B3 (en) | Food arrangement for heating systems | |
| DE202014103898U1 (en) | Fitting arrangement for water treatment of water for heating circuits | |
| DE102005009989B3 (en) | Jet-type no-return valve for pipeline has transfer element in form of bending rod which may consist of worm spring | |
| DE4023753C2 (en) | ||
| DE4444940A1 (en) | Connecting pipes | |
| DE19545446C2 (en) | Both ends with a shut-off device provided with a shut-off bypass line leading around the line section | |
| DE3030447A1 (en) | Fixed filter in multiway water tap - has soil removed by reversing flow direction | |
| EP1254318B1 (en) | Device for removing fluid from a container | |
| DE102008045398A1 (en) | Filter unit used to trap dirt particles carried in flow of central heating system, is arranged transversely with respect to main direction of flow | |
| DE19832199C2 (en) | Dirt trap installed in a pipeline | |
| DE29521755U1 (en) | Both ends with a shut-off device provided with a lockable bypass line leading around the line section | |
| DE10228535B4 (en) | Arrangement for the storage of a filter insert for a heating system | |
| DE202004014041U1 (en) | Filter for a pipe system, comprises a filter sieve located in a filter housing, a screw connection, a dirt filter and a seal | |
| CH692455A5 (en) | Corrosion protection device for water systems. | |
| EP1241451B1 (en) | Cap having a filter for collecting dirt particles for use with a water meter housing | |
| DE102005013672A1 (en) | filter means | |
| CN209696425U (en) | A kind of municipal tap water pipeline decontamination connector | |
| DE2314702B1 (en) | PRESSURE-ACTUATED SHUT-OFF DEVICE FOR A T-SHAPED PIPE JUNCTION |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: F17D0003120000 Ipc: F17D0003160000 |
|
| R207 | Utility model specification |
Effective date: 19990923 |
|
| R081 | Change of applicant/patentee |
Owner name: GEBR. MEIBES HOLDING GMBH, DE Free format text: FORMER OWNER: ARGE MEIBES/PLEUGER, 30916 ISERNHAGEN, DE Effective date: 19991102 |
|
| R156 | Lapse of ip right after 3 years |
Effective date: 20021203 |