EP1306140A1 - Cleaning process for pipes, device and associated cleaning product - Google Patents

Cleaning process for pipes, device and associated cleaning product Download PDF

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Publication number
EP1306140A1
EP1306140A1 EP02023430A EP02023430A EP1306140A1 EP 1306140 A1 EP1306140 A1 EP 1306140A1 EP 02023430 A EP02023430 A EP 02023430A EP 02023430 A EP02023430 A EP 02023430A EP 1306140 A1 EP1306140 A1 EP 1306140A1
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EP
European Patent Office
Prior art keywords
cleaning agent
cleaning
waste water
wall
pipe
Prior art date
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Application number
EP02023430A
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German (de)
French (fr)
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EP1306140B1 (en
EP1306140B8 (en
Inventor
Helmut Ötinger
Axel Bohatsch
Frank Magdeburg
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OETINGER, HELMUT EN BOHATSCH, AXEL EN MAGDEBURG, F
Original Assignee
Helmut Ötinger
Axel Bohatsch
Frank Magdeburg
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Publication of EP1306140A1 publication Critical patent/EP1306140A1/en
Publication of EP1306140B1 publication Critical patent/EP1306140B1/en
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Publication of EP1306140B8 publication Critical patent/EP1306140B8/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0322—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid in combination with a plug, e.g. inflatable mole, to isolate a part of the tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/057—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices being entrained discrete elements, e.g. balls, grinding elements, brushes

Definitions

  • the invention relates to a method for cleaning pipelines, in particular waste water pipes according to the preamble of claim 1, a corresponding device for this according to the preamble of claim 4 and a cleaning agent according to the preamble of claim 8.
  • Such methods, devices and cleaning agents are used to clean the inner wall of pipelines.
  • Such pipelines can be pressure pipelines in a sewage network.
  • the wastewater network consists of pumping and collection stations and, via the pipeline network, represents the connection from the generation to the treatment of domestic and industrial wastewater.
  • the high retention time of the wastewater and the deposits in the wastewater network favors the formation of a layer on the inner wall of the pipeline, known as a membrane that is colonized by microorganisms.
  • Microbiological conversion processes produce sulfides that can escape from the wastewater in the form of hydrogen sulfide.
  • the hydrogen sulfide has disadvantageous properties. On the one hand, hydrogen sulfide is extremely bad smelling and harmful to health. This affects the surrounding residential areas as well as the repair and maintenance personnel of the water management companies.
  • the cleaning body is designed as one or more one-piece, rotationally symmetrical bodies made of rigid or elastic, dissolvable material with two ring-cylindrical contact surfaces. The distance between the contact surfaces is smaller than the inner tube diameter and is formed by a body waist, the smallest cross section of which is 70% of the inner tube diameter.
  • the outer end of the cleaning body is formed by a frustoconical and a tapered section, which are connected to the two ring-cylindrical contact surfaces and on the side facing away from the waist.
  • the width and diameter of the two cylindrical contact surfaces are matched to the pipeline to be cleaned.
  • the cleaning body and in particular the two ring-cylindrical contact surfaces in engagement are mechanically stressed.
  • the diameter and the width of the two ring-cylindrical contact surfaces decrease steadily during processing, especially when the cleaning body consists of frozen water.
  • the reduction in the dimensions of the cleaning body is further increased by an existing temperature difference.
  • the cleaning effect diminishes. This disadvantageous fact is particularly evident when cleaning long pipe sections.
  • the special shape of the cleaning body is also considered to be disadvantageous - the shape and dimensions must be precisely matched to the pipeline to be cleaned in advance. This involves a great deal of effort in the production and provision of the cleaning bodies at the place of work.
  • the invention is therefore based on the object of a generic method for Cleaning of pipes and a suitable device as well as a cleaning agent to develop that without special shaping on any pipe diameter and - cross-section is adaptable and also enables the cleaning of long pipe sections.
  • the task is related to the new process by the characteristic features of claim 1 solved, expedient embodiments in the subclaims 2 and 3 are based on the device by the characterizing Features of claim 4 and by sub-claims 5 to 7 and related to the cleaning agent solved by the characterizing features of claim 8 and expediently designed by subclaims 9 to 11.
  • the corresponding device for cleaning pipelines, in particular waste water pipes, and the cleaning agent for cleaning eliminate the disadvantages of the prior art mentioned. It is advantageous if the pressure acting on the cleaning agent can be adjusted so that the material removal between the inner wall of the pipeline and the cleaning agent is balanced.
  • the pressure can be applied both by the internal system pressure or by an external pressure generator.
  • the duration of the cleaning effect can be adapted to the length of the pipeline if a correspondingly large pipeline section can be blocked and filled with detergent, the volume of the detergent storage container being greater than or at least equal to the volume of the delimited pipeline section.
  • the delimited pipeline section is filled particularly effectively if it is emptied beforehand and the filling is controlled by means of a metering pump.
  • a high cleaning effect with a correspondingly low self-dissolution is achieved by granulated cleaning agent, which can be completely or partially dissolved in the transport medium and consists of round or angular shaped bodies, which on the one hand ensure good nesting with one another and on the other hand ensure close contact with the inner wall of the pipeline.
  • the cleaning is particularly effective when using a mixture of granulated ice with the addition of organic components such as tangled straw or inorganic components such as liquid cleaners.
  • the cleaning of different pipe diameters and different pipe lengths is particularly noticeable as an advantage.
  • a wastewater network consists of several pumping and collecting stations that are connected by pipelines.
  • a wastewater inlet pipe 1 which opens into a conventional wastewater storage tank 2 and a wastewater outlet pipe 3 is shown from the pipeline network.
  • the waste water drain line 3 is limited at one end by an air compressor 4 and a backflow preventer 5.
  • the backflow safety device 5 closes the waste water drain line 3 automatically via a flap mechanism, not shown, in the direction of the air compressor 4, the opposite direction is open.
  • a backflow preventer 6 is also introduced into the waste water drain line 3.
  • the backflow safety device 6 automatically blocks the waste water discharge line 3 in the direction of the air compressor 4 via a flap mechanism (not shown).
  • the backflow safety device 6 is open in the direction of the waste water network, not shown. Both the waste water inlet line 1 and the waste water outlet line 3 are designed as conventional pressure pipelines. However, it is also possible for the waste water supply line 1 to be designed as a simple free fall line. In the section of the wastewater drain line 3 between the backflow preventer 5 and the backflow preventer 6, both a wastewater delivery line 7, to which a lower-level wastewater delivery pump 8 is connected, and a cleaning agent delivery line 9, which has a backflow prevention device 10 and a cleaning agent, open Feed pump 11 is connected to a higher-lying frustoconical reservoir 12.
  • a further backflow preventer 13 is introduced, which automatically closes the waste water delivery line 7 in the direction of the waste water delivery pump 8 via a flap mechanism, not shown.
  • the opposite direction from the waste water feed pump 8 to the waste water discharge line 3 is open as soon as the waste water feed pump 8 generates a feed pressure.
  • the tube lock 14 is equipped with an electrically operated drain valve 15.
  • the drain valve 15 connects the waste water drain line 3 to the waste water reservoir 2 in the open state.
  • the volume of the tube lock 14 is smaller than the volume of the storage container 12 filled with cleaning agent 16.
  • the cleaning agent 16 is made of a solid and shapeless, preferably granulated material mixture which dissolves in the transport medium.
  • the cleaning agent 16 preferably has a prismatic shape and a size which enables both good nesting with one another and good contact with the inner wall of the waste water drain line 3.
  • the size of the cleaning agent 16 is, however, also to be dimensioned such that the self-dissolution is as low as possible.
  • the cleaning agent 16 here consists of granulated ice, to which organic components in the form of tangled straw are added. However, inorganic admixtures are also possible, for example with liquid cleaners.
  • the ice is either made from drinking water of different purity or from the transport medium, the wastewater itself.
  • any other granulated material that can be dissolved in the transport medium can be used.
  • the use of non-dissolvable cleaning agent 16 in granular form or a mixture of dissolvable and non-dissolvable components is also possible. However, a device for separating the means of transport and cleaning agent must be provided after the cleaning has ended.
  • the emptying valve 15 closes the tube lock 14 again and the detergent feed pump 11 conveys detergent 16 from the storage container 12 into the tube lock 14 until the latter is full of detergent 16.
  • the cleaning agent 16 assumes the predetermined shape of the tube lock 14.
  • the wastewater feed pump 8 conveys the wastewater located in the wastewater reservoir 2 into the wastewater discharge line 3 and thereby compresses the cleaning agent 16 until there is close contact between the cleaning agent 16 and the inner wall of the wastewater discharge line.
  • the backflow safety device 6 opens as soon as the back pressure of the waste water in the waste water discharge line 3 has been overcome.
  • the cleaning agent 16 is pressed through the waste water drain line 3 by the waste water that is still pumped.
  • the maintenance of the transport pressure is carried out, after the wastewater reservoir 2 has been completely emptied, the air compressor 4, the wastewater and cleaning agent 16 are conveyed to the end of the wastewater discharge line 3, not shown.
  • the cleaning agent 16 is pressed against the inner wall of the waste water discharge line 3, so that with a simultaneous transport movement, the cleaning takes place by scraping many granulate particles of the cleaning agent 16 against the inner wall of the waste water discharge line 3. 3, while maintaining the cleaning pressure of the granulate particles of the cleaning agent 16 on the inner wall of the waste water drain line 3, the amount of cleaning agent 16 continuously decreases over the decreasing volume due to cleaning wear and self-dissolution.
  • the volume of the cleaning agent 16 at the beginning of the cleaning is dimensioned such that, despite cleaning wear and self-dissolution, the wastewater discharge line 3 is cleaned over the entire length even with different pipe diameters.
  • the flow velocity and thus the transport pressure can be changed via the air compressor 4 and this results in a change in the cleaning effect.
  • An increase in the transport pressure has a reinforcing effect on the cleaning action of the cleaning agent 16.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Cleaning In General (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Detergent Compositions (AREA)
  • Sewage (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

Cleaning of pipelines, especially drains, comprises blocking a drainpipe (3) filled with sewage, emptying the blocked pipeline section, and filling the section with a solid and formless cleaning agent (16). The cleaning agent is pressurized to form a block which lies against the inner wall of the drainpipe and is transported through the drainpipe. <??>Independent claims are also included for a device for cleaning pipelines and for a cleaning agent. Preferred Features: The pressure exerted on the cleaning agent is selected so that the material removal is uniform between the inner wall and the cleaning agent. The cleaning agent is granulated ice mixed with an organic component, e.g. straw, or an inorganic component, e.g. a liquid cleaner.

Description

Die Erfindung bezieht sich auf ein Verfahren zum Reinigen von Rohrleitungen, insbesondere Abwasserleitungen nach dem Oberbegriff des Anspruchs 1, eine entsprechende Einrichtung dazu nach dem Oberbegriff des Anspruchs 4 sowie ein Reinigungsmittel nach dem Oberbegriff des Anspruchs 8.
   Derartige Verfahren, Einrichtungen und Reinigungsmittel werden zum Reinigen der Innenwandung von Rohrleitungen eingesetzt. Solche Rohrleitungen können Druckrohrleitungen in einem Abwassernetz sein.The invention relates to a method for cleaning pipelines, in particular waste water pipes according to the preamble of claim 1, a corresponding device for this according to the preamble of claim 4 and a cleaning agent according to the preamble of claim 8.
Such methods, devices and cleaning agents are used to clean the inner wall of pipelines. Such pipelines can be pressure pipelines in a sewage network.

Das Abwassernetz besteht aus Pump- und Sammelstationen und stellt über das Rohrleitungsnetz die Verbindung von der Entstehung bis zur Aufbereitung häuslicher und industrieller Abwässer dar. Die hohe Verweildauer des Abwassers und der Ablagerungen im Abwassernetz begünstigt die Entstehung einer als Sielhaut bekannten Schicht an der Innenwandung der Rohrleitungen, die von Mikroorganismen besiedelt wird. Durch mikrobiologische Umwandlungsprozesse entstehen Sulfide, die in Form von Schwefelwasserstoff aus dem Abwasser entweichen können.
   Der Schwefelwasserstoff hat nachteilige Eigenschaften. Zum einen ist Schwefelwasserstoff äußerst übelriechend und gesundheitsschädigend. Davon sind die umliegenden Wohngebiete aber auch das Reparatur- und Wartungspersonal der Wasserwirtschaftsbetriebe stark betroffen.
   Zum anderen ist Schwefelwasserstoff, der sich durch biochemische Vorgänge zu hochaggressiver Schwefelsäure umwandelt, die Ursache für die biochemischer Korrosion. Hierbei werden Beton- und Metallelemente, insbesondere in Abwassersammel- und Kontrollschächten stark angegriffen und in kürzester Zeit unbrauchbar. Bei Erreichung einer kritischen Korrosionstiefe kann das Abwasserbauwerk dabei bis zum Einsturz gefährdet sein. Dadurch entstehen wirtschaftliche Schäden in erheblicher Größenordnung.
   Korrosion und Geruchsbelästigung stehen somit in kausalem Zusammenhang mit der durch Mikroorganismen besiedelten Sielhaut an den Innenwänden von Rohrleitungen. Damit kommt der Beseitigung der Sielhaut an der Innenwandung von Rohrleitungen eine große Bedeutung zu.The wastewater network consists of pumping and collection stations and, via the pipeline network, represents the connection from the generation to the treatment of domestic and industrial wastewater. The high retention time of the wastewater and the deposits in the wastewater network favors the formation of a layer on the inner wall of the pipeline, known as a membrane that is colonized by microorganisms. Microbiological conversion processes produce sulfides that can escape from the wastewater in the form of hydrogen sulfide.
The hydrogen sulfide has disadvantageous properties. On the one hand, hydrogen sulfide is extremely bad smelling and harmful to health. This affects the surrounding residential areas as well as the repair and maintenance personnel of the water management companies.
On the other hand, hydrogen sulfide, which converts to highly aggressive sulfuric acid through biochemical processes, is the cause of the biochemical corrosion. Here, concrete and metal elements, particularly in waste water collection and inspection shafts, are severely attacked and can be used in a very short time. If a critical depth of corrosion is reached, the wastewater structure can be at risk of collapse. This causes considerable economic damage.
Corrosion and unpleasant smells are therefore causally related to the membrane skin on the inner walls of pipelines colonized by microorganisms. The removal of the membrane skin on the inner wall of pipelines is therefore of great importance.

Zum Reinigen der Innenwandung von Rohrleitungen sind verschiedene Reinigungsverfahren und entsprechende Reinigungskörper entwickelt worden, die zumeist Kugeloder Zylinderform aufweisen und die mit auf der Oberfläche haftendem Schleif- oder Reinigungsmittel versehen sind. Für die Reinigung der Innenwandung gebogener Rohrleitungen sind biegsam verbundene Reinigungskörper vorgestellt worden. In immer gleichen Verfahrensabläufen werden die Reinigungskörper von unterschiedlich gestalteten Sendestationen in die Rohrleitung eingebracht und bewegen sich entweder über Gefällewirkung oder durch Druckbeaufschlagung zur Reinigung durch die Rohrleitung bis zu unterschiedlich gestalteten Entnahmestationen. Dort werden die Reinigungskörper aus der Rohrleitung entfernt. Die Reinigungswirkung wird durch den Kontakt des Reinigungskörpers oder Teile des Reinigungskörpers mit der Innenwandung der Rohrleitung sichergestellt. Verunreinigungen, die an der Innenwandung der Rohrleitung anhaften, werden dabei abgeschabt.
   Mit der OS DE 195 34 804 A1 ist ein Verfahren vorgestellt worden, bei dem Rohrleitungen gereinigt werden, wenn diese nicht über eine Entnahmestation verfügen. Dies wird durch die Verwendung von auflösbaren Reinigungskörpern möglich. Diese Reinigungskörper verfügen über die Eigenschaft, sich innerhalb des Rohrleitungsnetzes im eigentlichen Transportgut aufzulösen.
Der Reinigungskörper ist als ein oder mehrere einteilige rotationssymmetrische Körper aus starrem oder elastischem, auflösbarem Werkstoff mit zwei ringzylindrischen Kontaktflächen ausgeführt. Der Abstand der Kontaktflächen ist dabei kleiner als der Rohrinnendurchmesser und wird durch eine Körpertaille gebildet, deren kleinster Querschnitt 70% des Rohrinnendurchmessers beträgt. Den äußeren Abschluss des Reinigungskörpers bildet je ein kegelstumpfförmiger und ein spitzkegeliger Abschnitt, wobei diese an den zwei ringzylindrischen Kontaktflächen und an der der Körpertaille abgewandten Seite angeschlossen sind. Dabei sind Breite und Durchmesser der zwei ringzylindrischen Kontaktflächen auf die zu reinigende Rohrleitung abgestimmt.
   Während der Reinigung wird der Reinigungskörper und besonders die im Eingriff stehenden zwei ringzylindrischen Kontaktflächen mechanisch beansprucht. Der Durchmesser und die Breite der zwei ringzylindrischen Kontaktflächen verringern sich während der Bearbeitung stetig, besonders dann, wenn der Reinigungskörper aus gefrorenem Wasser besteht. Hierbei wird die Verringerung der Maße des Reinigungskörpers durch einen vorhandenen Temperaturunterschied noch verstärkt. Die Reinigungswirkung lässt nach. Dieser nachteilige Umstand wird besonders bei der Reinigung langer Rohrleitungsabschnitte deutlich.
   Die spezielle Formgebung des Reinigungskörpers wird gleichfalls als nachteilig gewertet - die Form und die Abmessungen müssen bereits im Vorfeld exakt auf die zu reinigende Rohrleitung abgestimmt sein. Dies zieht einen hohen Aufwand zur Herstellung und Bereitstellung der Reinigungskörper am Arbeitsort nach sich.Various cleaning processes and corresponding cleaning bodies have been developed for cleaning the inner wall of pipelines, most of which have a spherical or cylindrical shape and are provided with abrasive or cleaning agents adhering to the surface. Flexible cleaning bodies have been presented for cleaning the inner wall of bent pipes. The cleaning bodies are always introduced into the pipeline from differently designed transmission stations in the same process sequences and move either via a gradient effect or by pressurizing them for cleaning through the pipeline to differently designed removal stations. There the cleaning bodies are removed from the pipeline. The cleaning effect is ensured by the contact of the cleaning body or parts of the cleaning body with the inner wall of the pipeline. Contamination that adheres to the inner wall of the pipeline is scraped off.
With OS DE 195 34 804 A1, a method has been presented in which pipes are cleaned if they do not have an extraction station. This is made possible by the use of dissolvable cleaning bodies. These cleaning bodies have the property of dissolving in the actual transport goods within the pipeline network.
The cleaning body is designed as one or more one-piece, rotationally symmetrical bodies made of rigid or elastic, dissolvable material with two ring-cylindrical contact surfaces. The distance between the contact surfaces is smaller than the inner tube diameter and is formed by a body waist, the smallest cross section of which is 70% of the inner tube diameter. The outer end of the cleaning body is formed by a frustoconical and a tapered section, which are connected to the two ring-cylindrical contact surfaces and on the side facing away from the waist. The width and diameter of the two cylindrical contact surfaces are matched to the pipeline to be cleaned.
During cleaning, the cleaning body and in particular the two ring-cylindrical contact surfaces in engagement are mechanically stressed. The diameter and the width of the two ring-cylindrical contact surfaces decrease steadily during processing, especially when the cleaning body consists of frozen water. The reduction in the dimensions of the cleaning body is further increased by an existing temperature difference. The cleaning effect diminishes. This disadvantageous fact is particularly evident when cleaning long pipe sections.
The special shape of the cleaning body is also considered to be disadvantageous - the shape and dimensions must be precisely matched to the pipeline to be cleaned in advance. This involves a great deal of effort in the production and provision of the cleaning bodies at the place of work.

Der Erfindung liegt daher die Aufgabe zu Grunde, ein gattungsgemäßes Verfahren zur Reinigung von Rohrleitungen und eine geeignete Einrichtung sowie ein Reinigungsmittel zu entwickeln, das ohne spezielle Formgebung an jeden Rohrdurchmesser und - querschnitt anpassbar ist und auch die Reinigung langer Rohrleitungsabschnitte ermöglicht.The invention is therefore based on the object of a generic method for Cleaning of pipes and a suitable device as well as a cleaning agent to develop that without special shaping on any pipe diameter and - cross-section is adaptable and also enables the cleaning of long pipe sections.

Die Aufgabe wird bezogen auf das neue Verfahren durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst, wobei zweckdienliche Ausgestaltungen in den Unteransprüchen 2 und 3 ausgeführt sind, bezogen auf die Einrichtung durch die kennzeichnenden Merkmale des Anspruches 4 und durch die Unteransprüche 5 bis 7 sowie bezogen auf das Reinigungsmittel durch die kennzeichnenden Merkmale des Anspruchs 8 gelöst und zweckmäßig durch die Unteransprüche 9 bis 11 ausgestaltet.The task is related to the new process by the characteristic features of claim 1 solved, expedient embodiments in the subclaims 2 and 3 are based on the device by the characterizing Features of claim 4 and by sub-claims 5 to 7 and related to the cleaning agent solved by the characterizing features of claim 8 and expediently designed by subclaims 9 to 11.

Das erfindungsmäßige Verfahren, die entsprechende Einrichtung zum Reinigen von Rohrleitungen, insbesondere Abwasserleitungen und das Reinigungsmittel für die Reinigung beseitigen die genannten Nachteile des Standes der Technik.
   Von Vorteil ist, wenn der das Reinigungsmittel beaufschlagende Druck anpassbar ist, damit der Materialabtrag zwischen der Innenwandung der Rohrleitung und dem Reinigungsmittel ausgeglichen ist. Dabei kann der Druck sowohl durch den internen Systemdruck oder durch einen externen Druckerzeuger aufgebracht werden.
   Trotz Reinigungsverschleiß und Selbstauflösung lässt sich die Dauer der Reinigungswirkung an die Länge der Rohrleitung anpassen, wenn ein entsprechender großer Rohrleitungsabschnitt sperrbar und mit Reinigungsmittel füllbar ist, wobei das Volumen des Vorratsbehälters für Reinigungsmittel größer oder mindestens gleich dem Volumen des abgegrenzten Rohrleitungsabschnitts ist. Das Befüllen des abgegrenzten Rohrleitungsabschnitts erfolgt besonders effektiv, wenn dieser vorher entleert und das Befüllen mittels einer Dosierpumpe gesteuert wird.
   Hohe Reinigungswirkung bei entsprechend geringer Selbstauflösung wird durch granuliertes Reinigungsmittel, welches vollständig oder teilweise im Transportmedium auflösbar ist und aus runden oder eckigen Formkörpern besteht, die einerseits eine gute Verschachtelung untereinander und andererseits einen engen Kontakt mit der Innenwandung der Rohrleitung sicherstellen. Die Reinigung erfolgt besonders effektiv, bei Verwendung eines Gemischs aus granuliertem Eis mit einer Beigabe von organischen Bestandteilen, wie gehechseltem Stroh oder anorganischen Bestandteilen, wie Flüssigreinigern.
   Bei der Anwendung des erfindungsmäßigen Reinigungsmittels ist besonders die Reinigung unterschiedlicher Rohrdurchmesser und verschiedener Rohrleitungslänge als Vorteil auffällig. The method according to the invention, the corresponding device for cleaning pipelines, in particular waste water pipes, and the cleaning agent for cleaning eliminate the disadvantages of the prior art mentioned.
It is advantageous if the pressure acting on the cleaning agent can be adjusted so that the material removal between the inner wall of the pipeline and the cleaning agent is balanced. The pressure can be applied both by the internal system pressure or by an external pressure generator.
Despite cleaning wear and self-dissolution, the duration of the cleaning effect can be adapted to the length of the pipeline if a correspondingly large pipeline section can be blocked and filled with detergent, the volume of the detergent storage container being greater than or at least equal to the volume of the delimited pipeline section. The delimited pipeline section is filled particularly effectively if it is emptied beforehand and the filling is controlled by means of a metering pump.
A high cleaning effect with a correspondingly low self-dissolution is achieved by granulated cleaning agent, which can be completely or partially dissolved in the transport medium and consists of round or angular shaped bodies, which on the one hand ensure good nesting with one another and on the other hand ensure close contact with the inner wall of the pipeline. The cleaning is particularly effective when using a mixture of granulated ice with the addition of organic components such as tangled straw or inorganic components such as liquid cleaners.
When using the cleaning agent according to the invention, the cleaning of different pipe diameters and different pipe lengths is particularly noticeable as an advantage.

Die Erfindung soll anhand eines Ausführungsbeispiels näher erläutert werden. Dazu zeigen:

Fig. 1
eine schematische Darstellung eines Teils eines beliebigen Abwassernetzes mit einer Einrichtung zur Reinigung und in
Fig. 2
die um einen mit Reinigungsmittel gefüllten Rohrleitungsabschnitt erweiterte Fig. 1,
Fig. 3
eine schematische Darstellung der Veränderung der Menge des Reinigungsmittels während der Bearbeitungszeit.
The invention will be explained in more detail using an exemplary embodiment. To show:
Fig. 1
is a schematic representation of part of any wastewater network with a device for cleaning and in
Fig. 2
1 expanded by a pipeline section filled with cleaning agent,
Fig. 3
a schematic representation of the change in the amount of detergent during the processing time.

Ein nicht näher dargestelltes Abwassernetz besteht aus mehreren Pump- und Sammelstationen, die über Rohrleitungen verbunden sind.
Gemäß Fig. 1 ist aus dem Rohrleitungsverbund eine Abwasser-Zulaufleitung 1, die in einen üblichen Abwasserspeicher 2 mündet und eine Abwasser-Ablaufleitung 3 dargestellt. Die Abwasser-Ablaufleitung 3 wird an einem Ende von einem Luftverdichter 4 und einer Rückstausicherung 5 begrenzt. Die Rückstausicherung 5 schließt dabei die Abwasser-Ablaufleitung 3 über einen nicht dargestellten Klappenmechanismus automatisch in Richtung des Luftverdichters 4, die Gegenrichtung ist offen. Am gegenüberliegenden Ende ist in die Abwasser-Ablaufleitung 3 gleichfalls eine Rückstausicherung 6 eingebracht. Die Rückstausicherung 6 sperrt dabei die Abwasser-Ablaufleitung 3 über einen nicht dargestellten Klappenmechanismus automatisch in Richtung des Luftverdichters 4. In Richtung des nicht näher dargestellten Abwassernetzes ist die Rückstausicherung 6 offen. Sowohl die Abwasser-Zulaufleitung 1 als auch die Abwasser-Ablaufleitung 3 sind als herkömmliche Druckrohrleitungen ausgeführt. Es ist aber auch möglich, dass die Abwasser-Zulaufleitung 1 als einfache Freigefälleleitung ausgeführt ist.
   In den Abschnitt der Abwasser-Ablaufleitung 3 zwischen der Rückstausicherung 5 und der Rückstausicherung 6 mündet sowohl eine Abwasser-Förderleitung 7, an die eine tiefergelegene Abwasser-Förderpumpe 8 angeschlossen ist als auch eine Reinigungsmittel-Förderleitung 9, die über eine Rückstausicherung 10 und eine Reinigungsmittel-Förderpumpe 11 mit einem höhergelegenen kegelstumpfförmigen Vorratsbehälter 12 verbunden ist.
   In die Abwasser-Förderleitung 7 ist nahe der Mündung in die Abwasser-Ablaufleitung 3 eine weitere Rückstausicherung 13 eingebracht, die die Abwasser-Förderleitung 7 in Richtung der Abwasser-Förderpumpe 8 über einen nicht dargestellten Klappenmechanismus automatisch schließt. Die Gegenrichtung von der Abwasser-Förderpumpe 8 zur Abwasser-Ablaufleitung 3 ist offen, sobald die Abwasser-Förderpumpe 8 einen Förderdruck erzeugt.
   Die Rückstausicherung 10, die in der Reinigungsmittel-Förderleitung 9 nahe der Mündung in der Abwasser-Ablaufleitung 3 angeordnet ist, schließt automatisch über einen nicht dargestellten Klappenmechanismus in Richtung der Reinigungsmittel-Förderpumpe 11 und des darüber angeordneten Vorratsbehälters 12, die Gegenrichtung ist offen.
   In der Abwasser-Ablaufleitung 3 entsteht ein begrenztes Volumen einerseits durch die Rückstausicherung 5 und die Rückstausicherung 6 in horizontaler Richtung sowie andererseits durch die Rückstausicherung 10 und die Rückstausicherung 13 in vertikaler Richtung und bildet eine Rohrschleuse 14 aus. Die Rohrschleuse 14 ist mit einem elektrisch betätigten Entleerungsventil 15 ausgestattet. Das Entleerungsventil 15 verbindet im offenen Zustand die Abwasser-Ablaufleitung 3 mit dem Abwasserspeicher 2.
Das Volumen der Rohrschleuse 14 ist kleiner als das Volumen des mit Reinigungsmittel 16 gefüllten Vorratsbehälters 12. Das Reinigungsmittel 16 ist aus einem festen und formlosen, vorzugsweise granuliertem Werkstoffgemisch ausgeführt, welches sich im Transportmedium auflöst. Dabei besitzt das Reinigungsmittel 16 eine vorzugsweise prismatische Form und eine Größe, die sowohl eine gute Verschachtelung untereinander als auch einen guten Kontakt zur Innenwandung der Abwasser-Ablaufleitung 3 ermöglicht. Die Größe des Reinigungsmittels 16 ist aber auch so zu bemessen, dass die Selbstauflösung möglichst gering ist. Das Reinigungsmittel 16 besteht hier aus granuliertem Eis, dem organische Bestandteile in Form von gehechseltem Stroh beigemengt sind. Es sind aber auch anorganische Beimengungen, zum Beispiel mit Flüssigreiniger möglich. Das Eis ist entweder aus Trinkwasser unterschiedlicher Reinheit oder auch aus dem Transportmedium, dem Abwasser selbst erzeugt. Alternativ zu granuliertem Eis kann jeder andere im Transportmedium auflösbare granulierte Werkstoff eingesetzt werden. Auch die Verwendung nicht auflösbaren Reinigungsmittels 16 in Granulatform oder ein Gemisch aus auflösbaren und nicht auflösbaren Bestandteilen ist möglich. Dabei ist jedoch nach Beendigung der Reinigung eine Einrichtung zur Trennung des Transport- und Reinigungsmittels vorzusehen.A wastewater network, not shown, consists of several pumping and collecting stations that are connected by pipelines.
According to FIG. 1, a wastewater inlet pipe 1, which opens into a conventional wastewater storage tank 2 and a wastewater outlet pipe 3 is shown from the pipeline network. The waste water drain line 3 is limited at one end by an air compressor 4 and a backflow preventer 5. The backflow safety device 5 closes the waste water drain line 3 automatically via a flap mechanism, not shown, in the direction of the air compressor 4, the opposite direction is open. At the opposite end, a backflow preventer 6 is also introduced into the waste water drain line 3. The backflow safety device 6 automatically blocks the waste water discharge line 3 in the direction of the air compressor 4 via a flap mechanism (not shown). The backflow safety device 6 is open in the direction of the waste water network, not shown. Both the waste water inlet line 1 and the waste water outlet line 3 are designed as conventional pressure pipelines. However, it is also possible for the waste water supply line 1 to be designed as a simple free fall line.
In the section of the wastewater drain line 3 between the backflow preventer 5 and the backflow preventer 6, both a wastewater delivery line 7, to which a lower-level wastewater delivery pump 8 is connected, and a cleaning agent delivery line 9, which has a backflow prevention device 10 and a cleaning agent, open Feed pump 11 is connected to a higher-lying frustoconical reservoir 12.
In the waste water delivery line 7 near the mouth into the waste water discharge line 3, a further backflow preventer 13 is introduced, which automatically closes the waste water delivery line 7 in the direction of the waste water delivery pump 8 via a flap mechanism, not shown. The opposite direction from the waste water feed pump 8 to the waste water discharge line 3 is open as soon as the waste water feed pump 8 generates a feed pressure.
The backflow protection 10, which is arranged in the cleaning agent delivery line 9 near the mouth in the waste water discharge line 3, closes automatically via a flap mechanism, not shown, in the direction of the cleaning agent delivery pump 11 and the storage container 12 arranged above it, the opposite direction is open.
In the waste water drain line 3, a limited volume is created on the one hand by the backflow preventer 5 and the backflow preventer 6 in the horizontal direction and on the other hand by the backflow preventer 10 and the backflow preventer 13 in the vertical direction and forms a pipe lock 14. The tube lock 14 is equipped with an electrically operated drain valve 15. The drain valve 15 connects the waste water drain line 3 to the waste water reservoir 2 in the open state.
The volume of the tube lock 14 is smaller than the volume of the storage container 12 filled with cleaning agent 16. The cleaning agent 16 is made of a solid and shapeless, preferably granulated material mixture which dissolves in the transport medium. The cleaning agent 16 preferably has a prismatic shape and a size which enables both good nesting with one another and good contact with the inner wall of the waste water drain line 3. The size of the cleaning agent 16 is, however, also to be dimensioned such that the self-dissolution is as low as possible. The cleaning agent 16 here consists of granulated ice, to which organic components in the form of tangled straw are added. However, inorganic admixtures are also possible, for example with liquid cleaners. The ice is either made from drinking water of different purity or from the transport medium, the wastewater itself. As an alternative to granulated ice, any other granulated material that can be dissolved in the transport medium can be used. The use of non-dissolvable cleaning agent 16 in granular form or a mixture of dissolvable and non-dissolvable components is also possible. However, a device for separating the means of transport and cleaning agent must be provided after the cleaning has ended.

Die Reinigung der Abwasser-Ablaufleitung 3 soll nun ausgehend von den Fig. 1, 2 und 3 anhand einer Funktionsbeschreibung erläutert werden.
   Während des Normalbetriebes wird Abwasser in bestimmten zeitlichen Abständen aus dem Abwasserspeicher 2 von der Abwasser-Förderpumpe 8 über die Abwasser-Förderleitung 7 in die Abwasser-Ablaufleitung 3 gepumpt. Die Rückstausicherung 6 gibt dabei die Verbindung in das nicht näher dargestellte Abwassernetz frei. Es befindet sich also Abwasser sowohl im Abwasserspeicher 2 als auch in der Abwasser-Ablaufleitung 3. Zur Durchführung des Reinigungsbetriebes ist der Vorratsbehälter 12 mit Reinigungsmittel 16 gefüllt. Die Abwasser-Ablaufleitung 3 wird durch die Rückstausicherung 6 gesperrt. Das Entleerungsventil 15 öffnet und das in der Rohrschleuse 14 befindliche Abwasser entweicht vollständig in Richtung des Abwasserspeichers 2. Danach schliesst das Entleerungsventil 15 die Rohrschleuse 14 wieder und die Reinigungsmittel-Förderpumpe 11 fördert Reinigungsmittel 16 aus dem Vorratsbehälter 12 in die Rohrschleuse 14 solange, bis diese voll mit Reinigungsmittel 16 gefüllt ist. Dabei nimmt das Reinigungsmittel 16 in seiner Gesamtheit die vorgegebene Form der Rohrschleuse 14 an.
   Nun fördert die Abwasser-Förderpumpe 8 das im Abwasserspeicher 2 befindliche Abwasser in die Abwasser-Ablaufleitung 3 und drückt dabei das Reinigungsmittel 16 zusammen, bis ein enger Kontakt zwischen Reinigungsmittel 16 und Innenwandung der Abwasser-Ablaufleitung hergestellt ist. Die Rückstausicherung 6 öffnet, sobald der Gegendruck des in der Abwasser-Ablaufleitung 3 befindlichen Abwassers überwunden ist. Durch das weiterhin geförderte Abwasser wird das Reinigungsmittel 16 durch die Abwasser-Ablaufleitung 3 hindurch gedrückt. Die Aufrechterhaltung des Transportdrucks übernimmt, nach vollständiger Leerung des Abwasserspeichers 2, der Luftverdichter 4, der Abwasser und Reinigungsmittel 16 bis an das nicht dargestellte Ende der Abwasser-Ablaufleitung 3 befördert.
   Infolge des Transportdrucks wird das Reinigungsmittel 16 an die Innenwandung der Abwasser-Ablaufleitung 3 gedrückt, so dass bei gleichzeitiger Transportbewegung die Reinigung durch ein Schaben vieler Granulatteilchen des Reinigungsmittels 16 an der Innenwandung der Abwasser-Ablaufleitung 3 erfolgt. Dabei nimmt gemäß Fig. 3 unter Aufrechterhaltung des Reinigungsdrucks der Granulatteilchen des Reinigungsmittels 16 auf die Innenwandung der Abwasser-Ablaufleitung 3 die Menge des Reinigungsmittels 16 über das sich verringernde Volumen ständig durch Reinigungsverschleiß und Selbstauflösung ab. Das Volumen des Reinigungsmittels 16 zu Beginn der Reinigung ist so bemessen, dass trotz Reinigungsverschleiß und Selbstauflösung die Reinigung der Abwasser-Ablaufleitung 3 über die gesamte Länge auch bei unterschiedlichen Rohrdurchmessern erfolgt.
   Über den Luftverdichter 4 ist die Fließgeschwindigkeit und damit der Transportdruck veränderbar und es ergibt sich damit eine Veränderung der Reinigungswirkung. Eine Erhöhung des Transportdrucks wirkt sich dabei verstärkend auf die Reinigungswirkung des Reinigungsmittels 16 aus. The cleaning of the waste water drain line 3 will now be explained on the basis of FIGS. 1, 2 and 3 on the basis of a functional description.
During normal operation, wastewater is pumped from the wastewater reservoir 2 from the wastewater delivery pump 8 via the wastewater delivery line 7 into the wastewater discharge line 3 at certain time intervals. The backflow protection 6 releases the connection into the sewage network, not shown. There is therefore wastewater both in the wastewater reservoir 2 and in the wastewater drain line 3. To carry out the cleaning operation, the reservoir 12 is filled with cleaning agent 16. The waste water drain line 3 is blocked by the backflow safety device 6. The emptying valve 15 opens and the wastewater in the tube lock 14 escapes completely in the direction of the wastewater reservoir 2. Then the emptying valve 15 closes the tube lock 14 again and the detergent feed pump 11 conveys detergent 16 from the storage container 12 into the tube lock 14 until the latter is full of detergent 16. In its entirety, the cleaning agent 16 assumes the predetermined shape of the tube lock 14.
Now the wastewater feed pump 8 conveys the wastewater located in the wastewater reservoir 2 into the wastewater discharge line 3 and thereby compresses the cleaning agent 16 until there is close contact between the cleaning agent 16 and the inner wall of the wastewater discharge line. The backflow safety device 6 opens as soon as the back pressure of the waste water in the waste water discharge line 3 has been overcome. The cleaning agent 16 is pressed through the waste water drain line 3 by the waste water that is still pumped. The maintenance of the transport pressure is carried out, after the wastewater reservoir 2 has been completely emptied, the air compressor 4, the wastewater and cleaning agent 16 are conveyed to the end of the wastewater discharge line 3, not shown.
As a result of the transport pressure, the cleaning agent 16 is pressed against the inner wall of the waste water discharge line 3, so that with a simultaneous transport movement, the cleaning takes place by scraping many granulate particles of the cleaning agent 16 against the inner wall of the waste water discharge line 3. 3, while maintaining the cleaning pressure of the granulate particles of the cleaning agent 16 on the inner wall of the waste water drain line 3, the amount of cleaning agent 16 continuously decreases over the decreasing volume due to cleaning wear and self-dissolution. The volume of the cleaning agent 16 at the beginning of the cleaning is dimensioned such that, despite cleaning wear and self-dissolution, the wastewater discharge line 3 is cleaned over the entire length even with different pipe diameters.
The flow velocity and thus the transport pressure can be changed via the air compressor 4 and this results in a change in the cleaning effect. An increase in the transport pressure has a reinforcing effect on the cleaning action of the cleaning agent 16.

Liste der BezugszeichenList of reference numbers

11
Abwasser-ZulaufleitungSewage inlet pipe
22
Abwasserspeicherwater storage
33
Abwasser-AblaufleitungSewage drain pipe
44
Luftverdichterair compressor
55
Rückstausicherung (in der Abwasser-Ablaufleitung in Richtung Luftverdichter)Backflow protection (in the waste water drain line towards the air compressor)
66
Rückstausicherung (in der Abwasser-Ablaufleitung in Richtung Abwassernetz)Backflow protection (in the waste water drain line towards the waste water network)
77
Abwasser-FörderleitungEffluent output line
88th
Abwasser-FörderpumpeSewage pump
99
Reinigungsmittel-FörderleitungDetergent delivery line
1010
Rückstausicherung (in der Reinigungsmittel-Förderleitung)Backflow protection (in the detergent delivery line)
1111
Reinigungsmittel-FörderpumpeDetergent pump
1212
Vorratsbehälterreservoir
1313
Rückstausicherung (in Richtung der Abwasser-Förderleitung)Backflow protection (in the direction of the waste water delivery line)
1414
Rohrschleusetube lock
1515
Entleerungsventildrain valve
1616
Reinigungsmittelcleaning supplies

Claims (13)

Verfahren zum Reinigen von Rohrleitungen, insbesondere Abwasserleitungen
dadurch gekennzeichnet, dass eine mit Abwasser gefüllte Abwasser-Ablaufleitung (3) gesperrt, der gesperrte Rohrleitungsabschnitt, geleert und dann mit einem festen und formlosen Reinigungsmittel (16) befüllt wird, und das Reinigungsmittel (16) so mit Druck beaufschlagt wird, dass das Reinigungsmittel (16) zu einem Block komprimiert wird, der sich sowohl an die Innenwandung der Abwasser-Ablaufleitung (3) anlegt als auch durch diese transportiert wird.Process for cleaning pipelines, in particular sewage pipes
characterized in that a waste water discharge line (3) filled with waste water, the blocked pipeline section, is emptied and then filled with a solid and informal cleaning agent (16), and the cleaning agent (16) is pressurized such that the cleaning agent (16) is compressed into a block, which both lies against the inner wall of the waste water drain line (3) and is transported through it. Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass der das Reinigungsmittel (16) beaufschlagende Druck so gewählt wird, das der Materialabtrag zwischen der Innenwandung der Abwasser-Ablaufleitung (3) und dem Reinigungsmittel (16) ausgeglichen wird.Method according to claim 1,
characterized in that the pressure acting on the cleaning agent (16) is selected such that the material removal between the inner wall of the waste water discharge line (3) and the cleaning agent (16) is compensated. Verfahren nach Anspruch 2,
dadurch gekennzeichnet, dass der das Reinigungsmittel (16) beaufschlagende Druck vom internen Systemdruck oder von einem externen Druckerzeuger entnommen wird.Method according to claim 2,
characterized in that the pressure acting on the cleaning agent (16) is taken from the internal system pressure or from an external pressure generator. Einrichtung zum Reinigen von Rohrleitungen, insbesondere Abwasserleitungen, bei der mindestens eine Einrichtung zur Druckerzeugung und eine eingebende Einheit für ein Reinigungsmittel (16) an eine Abwasser-Ablaufleitung (3) eines beliebigen Abwassernetzes angeschlossen ist,
dadurch gekennzeichnet, dass in einem zu reinigenden Rohrleitungsabschnitt der Abwasser-Ablaufleitung (3) durch Rückstausicherungen (5, 6, 10, 13) eine Rohrschleuse (14) mit einem abgrenzbaren Volumen ausgebildet ist, das über eine Förderleitung und über eine betätigbare Dosiereinrichtung mit einem Depot für ein Reinigungsmittel (16) verbunden ist, die Rohrschleuse (14) über eine Rückstausicherung (6) eine Verbindung in Richtung des beliebigen Abwassernetzes besitzt und über eine Rückstausicherung (13) mit einer internen und über die Rückstausicherung (5) mit einer externen Druckerzeugungsanlage verbunden ist.Device for cleaning pipelines, in particular waste water pipes, in which at least one device for generating pressure and an input unit for a cleaning agent (16) is connected to a waste water drain pipe (3) of any waste water network,
characterized in that a pipe lock (14) with a delimitable volume is formed in a pipe section of the sewage discharge pipe (3) by backflow protection devices (5, 6, 10, 13), which can be supplied with a via a delivery line and via an actuatable metering device Depot for a cleaning agent (16) is connected, the pipe lock (14) has a connection in the direction of any waste water network via a backflow preventer (6) and a backflow preventer (13) with an internal and via the backflow preventer (5) with an external pressure generating system connected is. Einrichtung zum Reinigen von Rohrleitungen nach Anspruch 4,
dadurch gekennzeichnet, dass das Depot für Reinigungsmittel (16) ein Vorratsbehälter (12) ist, der über eine Reinigungsmittel-Förderpumpe (11) dosierbar ausgeführt ist.Device for cleaning pipes according to claim 4,
characterized in that the depot for cleaning agents (16) is a storage container (12) which is designed to be meterable via a cleaning agent delivery pump (11). Einrichtung zur Reinigung von Rohrleitungen nach Anspruch 5,
dadurch gekennzeichnet, dass das Volumen des Vorratsbehälters (12) mindestens gleich dem oder größer als das Volumen der Rohrschleuse (14) ausgeführt ist.Device for cleaning pipelines according to claim 5,
characterized in that the volume of the storage container (12) is at least equal to or greater than the volume of the tube lock (14). Einrichtung zum Reinigen von Rohrleitungen nach Anspruch 4,
dadurch gekennzeichnet, dass die Rohrschleuse (14) ein Entleerungsventil (15) aufweist.Device for cleaning pipes according to claim 4,
characterized in that the tube lock (14) has a drain valve (15). Reinigungsmittel,
dadurch gekennzeichnet, dass das Reinigungsmittel (16) aus einem festen und formlosen, vorzugsweise aus einem granulierten Werkstoffgemisch besteht und eine Abwasser-Ablaufleitung (3) so ausfüllt, dass das Reinigungsmittel (16) in Kontakt zur Innenwandung dieser Abwasser-Ablaufleitung (3) tritt.Cleaning supplies,
characterized in that the cleaning agent (16) consists of a solid and shapeless, preferably a granulated material mixture and fills a waste water drain pipe (3) such that the cleaning agent (16) comes into contact with the inner wall of this waste water drain pipe (3) , Reinigungsmittel nach Anspruch 8,
dadurch gekennzeichnet, dass das granulierte Reinigungsmittel (16) vollständig oder teilweise aus im Transportmedium auflösbaren, eckigen oder runden Formkörpern besteht, die eine Größe besitzen, die einerseits eine gute Verschachtelung untereinander und einen engen Kontakt zur Innenwandung der Abwasser-Ablaufleitung (3) und andererseits eine geringe Selbstauflösung bei gleichzeitig hoher Reinigungswirkung sicherstellt. Cleaning agent according to claim 8,
characterized in that the granulated cleaning agent (16) consists entirely or partially of angular or round shaped bodies which can be dissolved in the transport medium and which have a size which, on the one hand, interlocks well with one another and has close contact with the inner wall of the waste water drain line (3) and, on the other hand ensures a low self-dissolution with a high cleaning effect. Reinigungsmittel nach Anspruch 9,
dadurch gekennzeichnet, dass das Reinigungsmittel (16) ein Gemisch aus granuliertem Eis ist, dem ein organischer Bestandteil beigemengt ist.Cleaning agent according to claim 9,
characterized in that the cleaning agent (16) is a mixture of granulated ice, to which an organic component is added. Reinigungsmittel nach Anspruch 10,
dadurch gekennzeichnet, dass der organische Bestandteil des Reinigungsmittels (16) gehechseltes Stroh ist.Cleaning agent according to claim 10,
characterized in that the organic component of the cleaning agent (16) is teased straw. Reinigungsmittel nach Anspruch 9,
dadurch gekennzeichnet, dass das Reinigungsmittel (16) ein Gemisch aus granuliertem Eis ist, dem ein anorganischer Bestandteil beigemengt ist.Cleaning agent according to claim 9,
characterized in that the cleaning agent (16) is a mixture of granulated ice to which an inorganic component is added. Reinigungsmittel nach Anspruch 12,
dadurch gekennzeichnet, dass der anorganische Bestandteil des Reinigungsmittels (16) ein Flüssigreiniger ist.Cleaning agent according to claim 12,
characterized in that the inorganic component of the cleaning agent (16) is a liquid cleaner.
EP02023430A 2001-10-25 2002-10-19 Cleaning process for pipes. Expired - Lifetime EP1306140B8 (en)

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DE10152057 2001-10-25
DE10152057A DE10152057C1 (en) 2001-10-25 2001-10-25 Cleaning of pipelines, especially drains, comprises pressurizing a cleaning agent to form a block which lies against the inner wall of a drainpipe and is transported through the drainpipe

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EP1306140A1 true EP1306140A1 (en) 2003-05-02
EP1306140B1 EP1306140B1 (en) 2006-09-13
EP1306140B8 EP1306140B8 (en) 2006-11-15

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AT (1) ATE339260T1 (en)
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WO2021055054A1 (en) * 2019-09-17 2021-03-25 Tropicana Products, Inc. Interphase mixing inhibitors for minimizing material mixing in a material processing system
US11306859B2 (en) 2019-09-17 2022-04-19 Tropicana Products, Inc. Interphase mixing inhibitors for minimizing material mixing in a material processing system

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EP1306140B1 (en) 2006-09-13
EP1306140B8 (en) 2006-11-15
DE50208122D1 (en) 2006-10-26

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