EP3359815B1 - Method and device for pumping a product by suction - Google Patents

Method and device for pumping a product by suction Download PDF

Info

Publication number
EP3359815B1
EP3359815B1 EP16790663.5A EP16790663A EP3359815B1 EP 3359815 B1 EP3359815 B1 EP 3359815B1 EP 16790663 A EP16790663 A EP 16790663A EP 3359815 B1 EP3359815 B1 EP 3359815B1
Authority
EP
European Patent Office
Prior art keywords
transit
product
tank
vacuum
tanks
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16790663.5A
Other languages
German (de)
French (fr)
Other versions
EP3359815A1 (en
EP3359815C0 (en
Inventor
Daniel Rivard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ortec Expansion SA
Original Assignee
Ortec Expansion SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ortec Expansion SA filed Critical Ortec Expansion SA
Publication of EP3359815A1 publication Critical patent/EP3359815A1/en
Application granted granted Critical
Publication of EP3359815B1 publication Critical patent/EP3359815B1/en
Publication of EP3359815C0 publication Critical patent/EP3359815C0/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
    • F04F1/02—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped using both positively and negatively pressurised fluid medium, e.g. alternating
    • 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 
    • B08B9/08—Cleaning containers, e.g. tanks
    • 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 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
    • B08B9/0933—Removing sludge or the like from tank bottoms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/20—Filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
    • F04F1/06—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
    • F04F1/06—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped
    • F04F1/10—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped of multiple type, e.g. with two or more units in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
    • F04F1/06—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped
    • F04F1/14—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped adapted to pump specific liquids, e.g. corrosive or hot liquids

Definitions

  • the present invention relates to a method and a device for pumping a product by vacuum suction. Although not exclusively, it is particularly appropriate to be implemented for pumping products liable to produce an explosive atmosphere and/or to emit volatile organic compounds.
  • Such pumping operations are also necessary to purge industrial sewers, to recover the waste produced by the high-pressure cleaning of industrial installations, to extract sludge from treatment plants, to dry the bottoms of tanks so as to allow their inspection or maintenance, etc.
  • a fuel pumping system and method comprising two reservoirs, each provided with a first volume for fuel and a second volume for a compression fluid, a membrane separating the first and second volumes.
  • the suction, respectively the discharge, of the compression fluid in each second volume of the tanks by a pump makes it possible to bring the fuel into a first volume, respectively to inject the fuel at high pressure into an engine.
  • a vacuum pump can be used to empty the tank containing the products to be pumped.
  • a storage enclosure is arranged between the vacuum pump and a suction pipe permanently immersed in the product to be vacuum pumped.
  • This technique has the advantages of allowing the operation of the vacuum pump to be stopped during the pumping operation, while maintaining a suction capacity as long as the differential with respect to atmospheric pressure exists. It therefore makes it possible to completely exhaust the tank of drain. In addition, it ensures the emptying of the pumping circuit. Furthermore, it allows the installation of the pump at great distances from the product to be pumped due to the suction force. It also makes it possible to avoid contact of the product with the pump with the exception of vapors or gases and to limit the quantity of pollutants released and to confine the dangerous zone to the pumping zone.
  • the object of the present invention is to improve the technique of vacuum suction pumping, in order to retain its advantages and eliminate its drawbacks.
  • the two transit tanks work simultaneously and alternately, one being loaded with product by suction under vacuum and the other being emptied under pressure of the product previously drawn in.
  • Each transit tank is therefore alternately loaded with product, then emptied of the latter.
  • the evacuation and the evacuation under pressure of the said transit tanks can be obtained from any desired material, it is advantageous that, for the evacuation of the said first and second tanks transit, the discharge pressure of said vacuum pump is used.
  • the invention thus takes advantage of the fact that the use of the gases discharged by the vacuum pump as a source of pressure does not modify the capacity of said pump to generate the vacuum.
  • said first and second transit tanks are used to eliminate solid foreign bodies present in said product to be pumped.
  • said transit tanks can be cyclonic tanks.
  • the vacuum suction and the pressurization of said transit tanks can be obtained by a vacuum pump, preferably a water ring vacuum pump.
  • said vacuum source and said pressure source are respectively constituted by the suction orifice and by the discharge orifice of said vacuum pump.
  • Such a pumping device makes it possible to pump products whose flash point is less than 60°C.
  • said transit tanks can be cyclonic tanks allowing the removal of solid foreign bodies contained in the product to be pumped.
  • said sources of vacuum and pressure (the vacuum pump), said suction nozzle, said transit tanks and said set of controlled valves form a vacuum pumping unit which, for safety reasons, must preferably be remote from said product receiving tank which itself is at atmospheric pressure or at a slightly higher pressure.
  • the pumping device according to the present invention is connected to said receiving tank by a long pipe making it possible to distance said vacuum pumping unit from said receiving tank of said product.
  • the length of such a connecting pipe can be of the order of several tens of meters, for example at least 50 meters.
  • the pumping device in accordance with the present invention In order to be able to empty different geographically distributed industrial sites of their products liable to generate explosive atmospheres and/or volatile organic compounds, it is advantageous for the pumping device in accordance with the present invention to be mobile, for example carried by a vehicle. automobile.
  • FIG. 1 And 2 illustrate an embodiment of the pumping device according to the present invention in two different alternate phases of operation.
  • the transit tank 2 is placed under vacuum by the pump 1 and the product 10, possibly accompanied by air, is sucked into the said tank 2 via the suction nozzle 9, the valve of filling 11 and product inlet 2P.
  • the sucked up product is retained in the transit tank 2, since the drain valve 7 is closed.
  • the transit tank 3 is pressurized by the discharge port 1R of the pump 1 and the product previously sucked into said transit tank 3 is expelled into the reception tank 5 via the outlet 3S, the drain valve 8 and the long pipe 6.
  • the transit tank 3 is placed under vacuum by the pump 1 and the product 10, possibly accompanied by air, is sucked into the said tank 3 via the suction nozzle 9, the valve of filling 12 and product inlet 3P.
  • the sucked product is retained in the container 3 since the drain valve 8 is closed.
  • the transit tank 2 is pressurized by the discharge port 1R of the pump 1 and the product previously sucked into said transit tank 2 is expelled into the reception tank 5 via the outlet 2S, the drain valve 7 and the long pipe 6.
  • the alternation of said first and second phases controlled by the control system 14 makes it possible to pump the product 10 through the suction nozzle 9 to bring it into the receiving tank 5, by implementing not only the depression generated by pump 1 at its suction port 1A, but also the pressure generated by said pump 1 at its discharge port 1R.
  • the capacity ratio between those of the transit tanks and that of the reception tank is preferably of the order of 1/10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)

Description

La présente invention concerne un procédé et un dispositif pour le pompage d'un produit par aspiration sous vide. Quoique non exclusivement, elle est particulièrement appropriée à être mise en oeuvre pour le pompage de produits susceptibles de produire une atmosphère explosive et/ou d'émettre des composés organiques volatils.The present invention relates to a method and a device for pumping a product by vacuum suction. Although not exclusively, it is particularly appropriate to be implemented for pumping products liable to produce an explosive atmosphere and/or to emit volatile organic compounds.

On sait que de nombreuses industries, par exemple chimiques, pétrochimiques, agroalimentaires, métallurgiques, etc., engendrent des boues susceptibles de produire une atmosphère explosive et/ou d'émettre des composés organiques volatils. Ces boues sont généralement stockées dans des bacs, desquels elles doivent être pompées pour être transportées vers des sites spécialisés de traitement et/ou de stockage.It is known that many industries, for example chemical, petrochemical, food-processing, metallurgical, etc., generate sludge capable of producing an explosive atmosphere and/or of emitting volatile organic compounds. These sludges are generally stored in tanks, from which they must be pumped to be transported to specialized treatment and/or storage sites.

De telles opérations de pompage sont également nécessaires pour purger les égouts industriels, pour récupérer les déchets produits par le nettoyage haute pression d'installations industrielles, pour extraire les boues des stations d'épuration, pour assécher les fonds des cuves de manière à permettre leur inspection ou leur maintenance, etc.Such pumping operations are also necessary to purge industrial sewers, to recover the waste produced by the high-pressure cleaning of industrial installations, to extract sludge from treatment plants, to dry the bottoms of tanks so as to allow their inspection or maintenance, etc.

Ces opérations de pompage présentent, pour la sécurité et la santé des opérateurs et des riverains, ainsi que pour la protection des installations et de l'environnement, de nombreux risques qui sont liés à la nature explosive des produits pompés et à l'émission de gaz nocifs comme les composés organiques volatils.These pumping operations present, for the safety and health of operators and local residents, as well as for the protection of facilities and the environment, many risks which are linked to the explosive nature of the products pumped and the emission of harmful gases such as volatile organic compounds.

On connaît, par le document US-A1-2013327298 , un système et un procédé de pompage de carburant comprenant deux réservoirs, chacun pourvu d'un premier volume pour le carburant et d'un second volume pour un fluide de compression, une membrane séparant les premier et second volumes. L'aspiration, respectivement le refoulement, du fluide de compression dans chaque second volume des réservoirs par une pompe permet d'amener le carburant dans un premier volume, respectivement d'injecter le carburant à haute pression dans un moteur.We know from the document US-A1-2013327298 , a fuel pumping system and method comprising two reservoirs, each provided with a first volume for fuel and a second volume for a compression fluid, a membrane separating the first and second volumes. The suction, respectively the discharge, of the compression fluid in each second volume of the tanks by a pump makes it possible to bring the fuel into a first volume, respectively to inject the fuel at high pressure into an engine.

On connaît également, par le document EP-A1-1548195 , un procédé et un dispositif de pompage permettant d'empêcher la formation d'une atmosphère insalubre et/ou explosive dans l'environnement d'une citerne.We also know, from the document EP-A1-1548195 , a method and a pumping device for preventing the formation of an unhealthy and/or explosive atmosphere in the environment of a tank.

Par ailleurs, on connaît, par le document WO-A1-2014/117043 , un système et un procédé de collecte et d'élimination de déchets fluides pendant une procédure médicale.Moreover, we know, from the document WO-A1-2014/117043 , a system and method for collecting and disposing of fluid waste during a medical procedure.

En outre, on connaît, par le document US-A-4408960 , un procédé et un dispositif pneumatiques de circulation alternative de fluides entre plusieurs réservoirs par des moyens de réglage de la pression de l'air dans certains de ces réservoirs.In addition, we know, from the document US-A-4408960 , a method and a pneumatic device for the alternate circulation of fluids between several reservoirs by means of adjusting the air pressure in some of these reservoirs.

Pour réaliser de telles opérations de pompage mentionnées ci-dessus, on peut utiliser une pompe à vide pour vider le bac contenant les produits à pomper. Une enceinte de stockage est agencée entre la pompe à vide et un tuyau d'aspiration immergé en permanence dans le produit à pomper à vide.To carry out such pumping operations mentioned above, a vacuum pump can be used to empty the tank containing the products to be pumped. A storage enclosure is arranged between the vacuum pump and a suction pipe permanently immersed in the product to be vacuum pumped.

Cette technique présente les avantages de permettre un arrêt de fonctionnement de la pompe à vide durant l'opération de pompage, en maintenant une capacité d'aspiration tant que le différentiel par rapport à la pression atmosphérique existe. Elle permet donc d'épuiser à fond le bac à vidanger. De plus, elle assure la vidange du circuit de pompage. En outre, elle autorise l'installation de la pompe à des grandes distances du produit à pomper en raison de la force d'aspiration. Elle permet également d'éviter le contact du produit avec la pompe à l'exception des vapeurs ou des gaz et de limiter la quantité de polluants rejetée et de cantonner la zone dangereuse à la zone de pompage.This technique has the advantages of allowing the operation of the vacuum pump to be stopped during the pumping operation, while maintaining a suction capacity as long as the differential with respect to atmospheric pressure exists. It therefore makes it possible to completely exhaust the tank of drain. In addition, it ensures the emptying of the pumping circuit. Furthermore, it allows the installation of the pump at great distances from the product to be pumped due to the suction force. It also makes it possible to avoid contact of the product with the pump with the exception of vapors or gases and to limit the quantity of pollutants released and to confine the dangerous zone to the pumping zone.

En revanche, le principal inconvénient d'une telle technique de pompage par le vide est de favoriser la désorption de produits volatils et donc l'émission de gaz explosifs et de composés organiques volatils.On the other hand, the main disadvantage of such a vacuum pumping technique is to promote the desorption of volatile products and therefore the emission of explosive gases and volatile organic compounds.

La présente invention a pour objet de perfectionner la technique de pompage par aspiration sous vide, afin d'en conserver les avantages et d'en éliminer les inconvénients.The object of the present invention is to improve the technique of vacuum suction pumping, in order to retain its advantages and eliminate its drawbacks.

À cette fin, selon l'invention, le procédé pour le pompage d'un produit par aspiration par le vide est remarquable en ce que, de façon alternée :

  • on aspire le produit dans une première cuve de transit mise sous vide et, simultanément, on vidange une seconde cuve de transit par chasse sous pression,
  • puis, on aspire ledit produit dans ladite seconde cuve de transit mise sous vide et, simultanément, on vidange ladite première cuve de transit par chasse sous pression.
To this end, according to the invention, the method for pumping a product by vacuum suction is remarkable in that, alternately:
  • the product is sucked into a first transit tank placed under vacuum and, simultaneously, a second transit tank is emptied by flushing under pressure,
  • then, said product is sucked into said second transit tank placed under vacuum and, simultaneously, said first transit tank is emptied by flushing under pressure.

Ainsi, dans le procédé conforme à la présente invention, les deux cuves de transit travaillent simultanément et en alternance, l'une se chargeant de produit par aspiration sous vide et l'autre étant vidangée sous pression du produit précédemment aspiré. Chaque cuve de transit est donc alternativement chargée en produit, puis vidangée de celui-ci.Thus, in the method according to the present invention, the two transit tanks work simultaneously and alternately, one being loaded with product by suction under vacuum and the other being emptied under pressure of the product previously drawn in. Each transit tank is therefore alternately loaded with product, then emptied of the latter.

Bien que la mise sous vide et la chasse sous pression desdites cuves de transit puissent être obtenues de toute matière désirée, il est avantageux que, pour la mise sous vide desdites première et seconde cuves de transit, on utilise la pression de refoulement de ladite pompe à vide. L'invention met ainsi à profit le fait que l'utilisation des gaz refoulés par la pompe à vide comme source de pression ne modifie pas la capacité de ladite pompe à engendrer le vide.Although the evacuation and the evacuation under pressure of the said transit tanks can be obtained from any desired material, it is advantageous that, for the evacuation of the said first and second tanks transit, the discharge pressure of said vacuum pump is used. The invention thus takes advantage of the fact that the use of the gases discharged by the vacuum pump as a source of pressure does not modify the capacity of said pump to generate the vacuum.

Très fréquemment, les produits industriels à pomper comportent des corps étrangers solides et doivent donc être filtrés au moment du pompage. Or, une telle filtration est très pénalisante en ce qui concerne le débit de pompage. Pour éviter un tel inconvénient, conformément à une autre particularité de la présente invention, on utilise lesdites première et seconde cuves de transit pour éliminer des corps étrangers solides présents dans ledit produit à pomper. Pour ce faire, lesdites cuves de transit peuvent être des cuves cycloniques.Very frequently, the industrial products to be pumped contain solid foreign bodies and must therefore be filtered at the time of pumping. However, such a filtration is very detrimental as regards the pumping rate. To avoid such a drawback, in accordance with another feature of the present invention, said first and second transit tanks are used to eliminate solid foreign bodies present in said product to be pumped. To do this, said transit tanks can be cyclonic tanks.

La présente invention concerne de plus un dispositif pour le pompage d'un produit par aspiration sous vide, ledit dispositif comportant une source de vide et une buse d'aspiration dudit produit et étant remarquable en ce qu'il comporte :

  • une source de pression,
  • deux cuves de transit pour ledit produit, et
  • un jeu de vannes commandées reliant, simultanément et en alternance, l'une desdites cuves de transit à ladite source de vide et à ladite buse d'aspiration et l'autre desdites cuves de transit à ladite source de pression et à une cuve de réception dudit produit de sorte que :
    • ▪ dans une première phase de fonctionnement du dispositif, une première cuve de transit est mise sous vide et le produit est aspiré dans ladite première cuve de transit, et simultanément, la seconde cuve de transit est mise sous pression et le produit précédemment aspiré est chassé dans la cuve de réception ; et
    • ▪ dans une seconde phase de fonctionnement du dispositif, la seconde cuve de transit est mise sous vide et le produit est aspiré dans ladite seconde cuve de transit, et simultanément, la première cuve de transit est mise sous pression et le produit précédemment aspiré est chassé dans la cuve de réception.
The present invention further relates to a device for pumping a product by vacuum suction, said device comprising a vacuum source and a suction nozzle of said product and being noteworthy in that it comprises:
  • a source of pressure,
  • two transit tanks for said product, and
  • a set of controlled valves connecting, simultaneously and alternately, one of said transit tanks to said vacuum source and to said suction nozzle and the other of said transit tanks to said pressure source and to a receiving tank of said product so that:
    • ▪ in a first phase of operation of the device, a first transit tank is placed under vacuum and the product is sucked into said first transit tank, and simultaneously, the second transit tank is pressurized and the previously sucked product is expelled in the receiving tank; And
    • ▪ in a second phase of operation of the device, the second transit tank is placed under vacuum and the product is sucked into said second transit tank, and simultaneously, the first transit tank is pressurized and the previously sucked product is expelled in the receiving tank.

Comme mentionné ci-dessus, l'aspiration sous vide et la mise en pression desdites cuves de transit peuvent être obtenues par une pompe à vide, de préférence une pompe à vide à anneau d'eau. Dans ce cas, ladite source de vide et ladite source de pression sont respectivement constituées par l'orifice d'aspiration et par l'orifice de refoulement de ladite pompe à vide.As mentioned above, the vacuum suction and the pressurization of said transit tanks can be obtained by a vacuum pump, preferably a water ring vacuum pump. In this case, said vacuum source and said pressure source are respectively constituted by the suction orifice and by the discharge orifice of said vacuum pump.

Un tel dispositif de pompage permet de pomper des produits dont le point éclair est inférieur à 60 °C.Such a pumping device makes it possible to pump products whose flash point is less than 60°C.

Comme précédemment indiqué, dans ce dispositif de pompage conforme à la présente invention, lesdites cuves de transit peuvent être des cuves cycloniques permettant l'élimination des corps étrangers solides contenus dans le produit à pomper.As previously indicated, in this pumping device according to the present invention, said transit tanks can be cyclonic tanks allowing the removal of solid foreign bodies contained in the product to be pumped.

On remarquera que lesdites sources de vide et de pression (la pompe à vide), ladite buse d'aspiration, lesdites cuves de transit et ledit jeu de vannes commandées forment une unité de pompage sous vide qui, pour des raisons de sécurité, doit de préférence être éloignée de ladite cuve de réception du produit qui, elle, se trouve à la pression atmosphérique ou à une pression légèrement supérieure. À cet effet, le dispositif de pompage conforme à la présente invention est relié à ladite cuve de réception par un long tuyau permettant d'éloigner ladite unité de pompage sous vide de ladite cuve de réception dudit produit.It will be noted that said sources of vacuum and pressure (the vacuum pump), said suction nozzle, said transit tanks and said set of controlled valves form a vacuum pumping unit which, for safety reasons, must preferably be remote from said product receiving tank which itself is at atmospheric pressure or at a slightly higher pressure. To this end, the pumping device according to the present invention is connected to said receiving tank by a long pipe making it possible to distance said vacuum pumping unit from said receiving tank of said product.

La longueur d'un tel tuyau de liaison peut être de l'ordre de plusieurs dizaines de mètres, par exemple au moins de 50 mètres.The length of such a connecting pipe can be of the order of several tens of meters, for example at least 50 meters.

Afin de pouvoir vidanger des sites industriels différents géographiquement répartis de leurs produits susceptibles d'engendrer des atmosphères explosives et/ou des composés organiques volatils, il est avantageux que le dispositif de pompage conforme à la présente invention soit mobile, par exemple porté par un véhicule automobile.In order to be able to empty different geographically distributed industrial sites of their products liable to generate explosive atmospheres and/or volatile organic compounds, it is advantageous for the pumping device in accordance with the present invention to be mobile, for example carried by a vehicle. automobile.

Les figures du dessin annexé feront bien comprendre comment l'invention peut être réalisée. Sur ces figures, des références identiques désignent des éléments identiques.The figures of the appended drawing will make it clear how the invention can be implemented. In these figures, identical references designate identical elements.

Les figures 1 et 2 illustrent un exemple de réalisation du dispositif de pompage conforme à la présente invention dans deux phases alternées différentes de fonctionnement.THE figure 1 And 2 illustrate an embodiment of the pumping device according to the present invention in two different alternate phases of operation.

Le mode de réalisation du dispositif conforme à la présente invention représenté schématiquement sur les figures 1 et 2 comporte :

  • une pompe à vide 1, par exemple une pompe à anneau d'eau, comportant un orifice d'aspiration 1A et un orifice de refoulement 1R ;
  • une première cuve de transit 2, de préférence une cuve cyclonique, comportant une entrée fluidique 2E, une entrée de produit 2P et une sortie de produit 2S ;
  • une seconde cuve de transit 3, de préférence une cuve cyclonique, comportant une entrée fluidique 3E, une entrée de produit 3P et une sortie de produit 3S ;
  • une vanne à quatre voies 4, disposée entre les orifices d'aspiration 1A et de refoulement 1R de la pompe à vide 1, d'une part, et les entrées fluidiques 2E et 3E des première et seconde cuves de transit 2 et 3, d'autre part ;
  • une cuve de réception de produit 5, comportant une entrée de produit 5E ;
  • des vannes de vidange commandées 7 et 8 reliant respectivement les sorties 2S et 3S des cuves de transit 2 et 3 à l'entrée de produit 5E de la cuve de réception 5 par l'intermédiaire d'un long tuyau 6, d'une longueur au moins égale à 50 mètres ;
  • une buse 9 d'aspiration d'un produit 10 à pomper, reliée respectivement aux entrées de produit 2P et 3P des première et seconde cuves de transit 2 et 3, par l'intermédiaire de vannes de remplissage commandées 11 et 12 ; et
  • un système de commande 14 (seulement représenté sur les figures 1 et 2 par des flèches) pour commander les vannes 4, 7, 8, 11 et 12.
The embodiment of the device according to the present invention represented schematically on the figure 1 And 2 includes:
  • a vacuum pump 1, for example a water ring pump, comprising a suction port 1A and a discharge port 1R;
  • a first transit tank 2, preferably a cyclonic tank, comprising a fluid inlet 2E, a product inlet 2P and a product outlet 2S;
  • a second transit tank 3, preferably a cyclonic tank, comprising a fluid inlet 3E, a product inlet 3P and a product outlet 3S;
  • a four-way valve 4, arranged between the suction 1A and discharge 1R orifices of the vacuum pump 1, on the one hand, and the fluidic inlets 2E and 3E of the first and second transit tanks 2 and 3, d 'somewhere else ;
  • a product receiving tank 5, comprising a product inlet 5E;
  • controlled drain valves 7 and 8 respectively connecting the 2S and 3S outlets of the transit tanks 2 and 3 to the product inlet 5E of the receiving tank 5 via a long pipe 6, of a length at least equal to 50 meters;
  • a suction nozzle 9 for a product 10 to be pumped, respectively connected to the product inlets 2P and 3P of the first and second transit tanks 2 and 3, via controlled filling valves 11 and 12; And
  • a control system 14 (only represented on the figure 1 And 2 by arrows) to control valves 4, 7, 8, 11 and 12.

Dans une première phase de fonctionnement du dispositif de l'invention, représentée sur la figure 1 et commandée par le système de commande 14, la vanne à quatre voies 4 relie l'entrée fluidique 2E de la cuve de transit 2 à l'orifice d'aspiration 1A de la pompe à vide 1 et l'entrée fluidique 3E de la cuve de transit 3 à l'orifice de refoulement 1R de ladite pompe. De plus :

  • la vanne de vidange 7, à la sortie 2S de la cuve de transit 2, est fermée ;
  • la vanne de remplissage 11, à l'entrée de produit 2P de la cuve de transit 2, est ouverte ;
  • la vanne de remplissage 12, à l'entrée de produit 3P de la cuve de transit 3, est fermée ; et
  • la vanne de vidange 8, à la sortie 3S de la cuve de transit 3, est ouverte.
In a first phase of operation of the device of the invention, shown in the figure 1 and controlled by the control system 14, the four-way valve 4 connects the fluid inlet 2E of the transit tank 2 to the suction port 1A of the vacuum pump 1 and the fluid inlet 3E of the tank transit 3 to the discharge port 1R of said pump. Moreover :
  • the drain valve 7, at the exit 2S of the transit tank 2, is closed;
  • the filling valve 11, at the product inlet 2P of the transit tank 2, is open;
  • the filling valve 12, at the product inlet 3P of the transit tank 3, is closed; And
  • the drain valve 8, at the outlet 3S of the transit tank 3, is open.

Dans ces conditions, la cuve de transit 2 est mise sous vide par la pompe 1 et du produit 10, éventuellement accompagné d'air, est aspiré dans ladite cuve 2 par l'intermédiaire de la buse d'aspiration 9, de la vanne de remplissage 11 et de l'entrée de produit 2P. Le produit aspiré est retenu dans la cuve de transit 2, puisque la vanne de vidange 7 est fermée. Simultanément, la cuve de transit 3 est mise sous pression par l'orifice de refoulement 1R de la pompe 1 et le produit précédemment aspiré dans ladite cuve de transit 3 est chassé dans la cuve de réception 5 par l'intermédiaire de la sortie 3S, de la vanne de vidange 8 et du long tuyau 6.Under these conditions, the transit tank 2 is placed under vacuum by the pump 1 and the product 10, possibly accompanied by air, is sucked into the said tank 2 via the suction nozzle 9, the valve of filling 11 and product inlet 2P. The sucked up product is retained in the transit tank 2, since the drain valve 7 is closed. Simultaneously, the transit tank 3 is pressurized by the discharge port 1R of the pump 1 and the product previously sucked into said transit tank 3 is expelled into the reception tank 5 via the outlet 3S, the drain valve 8 and the long pipe 6.

Inversement, dans une seconde phase de fonctionnement du dispositif de l'invention représentée sur la figure 2, et également commandée par le système de commande 14, la vanne à quatre voies 4 relie l'entrée fluidique 3F de la cuve de transit 3 à l'orifice d'aspiration 1A de la pompe à vide 1 et l'entrée fluidique 3E de la cuve de transit 2 à l'orifice de refoulement 1R de ladite pompe. De plus :

  • la vanne de vidange 8, à la sortie 3S de la cuve de transit 3, est fermée ;
  • la vanne de remplissage 12, à l'entrée de produit 3P de la cuve de transit 3, est ouverte ;
  • la vanne de remplissage 11, à l'entrée de produit 2P de la cuve de transit 2, est fermée ; et
  • la vanne de vidange 7, à la sortie 2S de la cuve de transit 2, est ouverte.
Conversely, in a second phase of operation of the device of the invention shown in the figure 2 , and also controlled by the control system 14, the four-way valve 4 connects the fluid inlet 3F of the transit tank 3 to the suction port 1A of the vacuum pump 1 and the fluid inlet 3E of the transit tank 2 to the discharge port 1R of said pump. Moreover :
  • the drain valve 8, at the outlet 3S of the transit tank 3, is closed;
  • the filling valve 12, at the product inlet 3P of the transit tank 3, is open;
  • the filling valve 11, at the product inlet 2P of the transit tank 2, is closed; And
  • the drain valve 7, at the outlet 2S of the transit tank 2, is open.

Dans ces conditions, la cuve de transit 3 est mise sous vide par la pompe 1 et du produit 10, éventuellement accompagné d'air, est aspiré dans ladite cuve 3 par l'intermédiaire de la buse d'aspiration 9, de la vanne de remplissage 12 et de l'entrée de produit 3P. Le produit aspiré est retenu dans le récipient 3 puisque la vanne de vidange 8 est fermée. Simultanément, la cuve de transit 2 est mise sous pression par l'orifice de refoulement 1R de la pompe 1 et le produit précédemment aspiré dans ladite cuve de transit 2 est chassé dans la cuve de réception 5 par l'intermédiaire de la sortie 2S, de la vanne de vidange 7 et du long tuyau 6.Under these conditions, the transit tank 3 is placed under vacuum by the pump 1 and the product 10, possibly accompanied by air, is sucked into the said tank 3 via the suction nozzle 9, the valve of filling 12 and product inlet 3P. The sucked product is retained in the container 3 since the drain valve 8 is closed. Simultaneously, the transit tank 2 is pressurized by the discharge port 1R of the pump 1 and the product previously sucked into said transit tank 2 is expelled into the reception tank 5 via the outlet 2S, the drain valve 7 and the long pipe 6.

Ainsi, l'alternance desdites première et seconde phases commandées par le système de commande 14 permet de pomper le produit 10 par la buse d'aspiration 9 pour l'amener dans la cuve de réception 5, en mettant en oeuvre non seulement la dépression engendrée par la pompe 1 à son orifice d'aspiration 1A, mais encore la pression engendrée par ladite pompe 1 à son orifice de refoulement 1R.Thus, the alternation of said first and second phases controlled by the control system 14 makes it possible to pump the product 10 through the suction nozzle 9 to bring it into the receiving tank 5, by implementing not only the depression generated by pump 1 at its suction port 1A, but also the pressure generated by said pump 1 at its discharge port 1R.

Bien que cela ne soit pas représenté sur les figures 1 et 2, on comprendra aisément :

  • que le dispositif de pompage décrit ci-dessus, composé de la pompe à vide 1, des cuves de transit 2 et 3, des vannes 4, 7, 8, 11 et 12 et du système de commande 14, peut être porté par un véhicule automobile ou une remorque pour être mobile et pouvoir se déplacer et pomper des produits 10 en des endroits différents ;
  • que, de même, la cuve 5 de réception du produit pompé peut être mobile ; et
  • que le tuyau 6 peut être prévu pour être monté de façon amovible, d'un côté au dispositif de pompage et, de l'autre, à la cuve 5 de réception du produit pompé.
Although not shown on the figure 1 And 2 , we can easily understand:
  • that the pumping device described above, consisting of the vacuum pump 1, the transit tanks 2 and 3, the valves 4, 7, 8, 11 and 12 and the control system 14, can be carried by a vehicle automobile or a trailer to be mobile and able to move and pump products in different places;
  • that, likewise, the tank 5 for receiving the pumped product can be mobile; And
  • that the pipe 6 can be provided to be removably mounted, on one side to the pumping device and, on the other, to the tank 5 for receiving the pumped product.

Par ailleurs, le dispositif de pompage présente de nombreux avantages et caractéristiques supplémentaires, et notamment :

  • il permet de limiter au maximum le laps de temps de mise sous vide du liquide ;
  • il permet de refouler le liquide et les gaz d'échappement de la même pompe à vide tout en continuant de pomper ;
  • la cuve de réception n'est pas un récipient sous vide, mais un simple récipient de stockage ;
  • il peut présenter des temps de cycle courts avec des volumes de mise sous vide réduits ; et
  • le pompage du produit est alterné sur les cuves, mais sans discontinuité.
In addition, the pumping device has many additional advantages and features, including:
  • it makes it possible to limit as much as possible the period of time for placing the liquid under vacuum;
  • it allows the liquid and the exhaust gases of the same vacuum pump to be discharged while continuing to pump;
  • the receiving tank is not a vacuum container, but a simple storage container;
  • it can have short cycle times with reduced vacuum volumes; And
  • the pumping of the product is alternated on the tanks, but without interruption.

En outre, avec le traitement sur les deux phases (liquide/gaz) par quantités restreintes emprisonnées alternativement dans des cuves de transit, cuves qui sont disposées en parallèle dans le circuit de fonctionnement, l'alternance des cycles de chasse sur les deux cuves montées en parallèle permet de contenir et refouler le produit dans son intégralité (phase gazeuse comprise) vers la cuve de stockage, par pas. Le phénomène de désorption est réduit et traité par le phasage de séquences alternées dépression-compression, sur de plus faibles volumes mis en dépression pendant de courtes durées d'exposition.In addition, with the treatment on the two phases (liquid/gas) by limited quantities imprisoned alternately in transit tanks, tanks which are arranged in parallel in the operating circuit, the alternation of flushing cycles on the two tanks mounted in parallel makes it possible to contain and push back the product in its entirety (gas phase included) towards the storage tank, in steps. The phenomenon of desorption is reduced and treated by the phasing of alternating depression-compression sequences, on smaller volumes placed in depression for short exposure times.

Par ailleurs, le rapport de capacités entre celles des cuves de transit et celle de la cuve de réception est, de préférence, de l'ordre de 1/10.Furthermore, the capacity ratio between those of the transit tanks and that of the reception tank is preferably of the order of 1/10.

Claims (10)

  1. Method for the pumping of sludge (10) that is susceptible to producing an explosive atmosphere and/or producing volatile organic compounds by vacuum suction,
    wherein, in an alternating fashion:
    - the product is sucked into an initial transit tank (2) under vacuum and, simultaneously, a secondary transit tank (3) is emptied by flushing under pressure of the previously suctioned product, the previously suctioned product being flushed into a reception tank (5),
    - then, said product is sucked into said secondary transit tank (3) under vacuum and, simultaneously, said initial transit tank (2) is emptied by flushing under pressure of the previously suctioned product, the previously suctioned product being flushed into the reception tank (5).
  2. Method for pumping according to claim 1,
    wherein, for the placing under vacuum of said initial and secondary transit tanks (2, 3), the suction vacuum of a vacuum pump (1) is used and, for the flushing under pressure of said initial and secondary transit tanks (2, 3), the expulsion pressure of said vacuum pump (1) is used.
  3. Method for pumping according to one of claims 1 or 2,
    wherein said initial and secondary transit tanks (2, 3) are used to eliminate solid foreign bodies present in said product.
  4. Device for the pumping of sludge (10) that is susceptible to producing an explosive atmosphere and/or producing volatile organic compounds by vacuum suction, said device comprising:
    - a vacuum source and a suction nozzle (9) of said product,
    - a pressure source,
    - two transit tanks (2, 3) for said product (10), and
    - a set of controlled valves (4, 7, 8, 11, 12) connecting, simultaneously and alternately, one of said transit tanks to said vacuum source and to said suction nozzle (9) and the other of said transit tanks to said pressure source and a reception tank (5) of said product such that:
    - in an initial operation phase of the device (1), an initial transit tank (2) is placed under vacuum and the product (10) is sucked into said initial transit tank (2), and, simultaneously, the secondary transit tank (3) is put under pressure and the previously suctioned product is flushed into the reception tank (5),
    - in a second operation phase of the device (1), the secondary transit tank (3) is placed under vacuum and the product (10) is sucked into said secondary transit tank (3) and, simultaneously, the initial transit tank (2 is put under pressure and the previously suctioned product is flushed into the reception tank (5).
  5. Pumping device according to claim 4,
    the device comprising a vacuum pump (1), wherein said vacuum source and said pressure source are respectively made up of the suction opening (1A) and the expulsion opening (1R) of said vacuum pump (1).
  6. Pumping device according to claim 5,
    wherein said vacuum pump (1) is of water-ring type.
  7. Pumping device according to one of claims 4 to 6,
    wherein said transit tanks (2, 3) are cyclonic tanks.
  8. Pumping device according to one of claims 4 to 7,
    wherein the transit tanks are linked to said reception tank (5) by a pipe (6) which allows said reception tank (5) to be moved from said product.
  9. Pumping device according to claim 8,
    wherein the length of the pipe (6) is at least 50 metres.
  10. Pumping device according to one of claims 8 or 9,
    the device being moveable.
EP16790663.5A 2015-10-08 2016-10-05 Method and device for pumping a product by suction Active EP3359815B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1559578A FR3042236B1 (en) 2015-10-08 2015-10-08 METHOD AND DEVICE FOR PUMPING A PRODUCT BY SUCTION.
PCT/FR2016/052551 WO2017060616A1 (en) 2015-10-08 2016-10-05 Method and device for pumping a product by suction

Publications (3)

Publication Number Publication Date
EP3359815A1 EP3359815A1 (en) 2018-08-15
EP3359815B1 true EP3359815B1 (en) 2023-06-07
EP3359815C0 EP3359815C0 (en) 2023-06-07

Family

ID=54708007

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16790663.5A Active EP3359815B1 (en) 2015-10-08 2016-10-05 Method and device for pumping a product by suction

Country Status (5)

Country Link
US (1) US20180283406A1 (en)
EP (1) EP3359815B1 (en)
CA (1) CA3000795A1 (en)
FR (1) FR3042236B1 (en)
WO (1) WO2017060616A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2016990B1 (en) * 2016-06-17 2018-01-16 Koks Group B V Vacuum Installation for industrial vacuum processes
CA3060954A1 (en) * 2018-11-06 2020-05-06 LMC Industrial Contractors, Inc. Remediation of excavated pipe sections

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408960A (en) * 1981-09-11 1983-10-11 Logic Devices, Inc. Pneumatic method and apparatus for circulating liquids
US20130327298A1 (en) * 2007-12-20 2013-12-12 Volvo Technology Corporation Fuel-pumping system, method for operating a fuel-pumping system and fuel-injection system comprising a fuel-pumping system

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1929350A (en) * 1930-04-08 1933-10-03 Niels C Christensen Method and apparatus for compressing gases
US2549620A (en) * 1945-05-28 1951-04-17 Mitchell Co John E Pumping mechanism
GB837090A (en) * 1959-01-09 1960-06-09 Alexander Bosch Improvements in or relating to equipment for clearing blocked pipes
US3648458A (en) * 1970-07-28 1972-03-14 Roy E Mcalister Vapor pressurized hydrostatic drive
US3971400A (en) * 1975-01-24 1976-07-27 Thompson David L Portable vacuum and pressure liquid tank apparatus
US4353174A (en) * 1980-08-11 1982-10-12 Amtec Development Company Electronic control system for pneumatic-hydraulic pump dredge
US4422833A (en) * 1981-05-11 1983-12-27 Free Flow, Inc. Pneumatic transfer system and a fluid flow control device therefor
US4460318A (en) * 1982-08-13 1984-07-17 The United States Of America As Represented By The United States Department Of Energy Apparatus and method for transferring slurries
US5290151A (en) * 1988-10-28 1994-03-01 Snamprogetti S.P.A. Process for pumping a multi-phase gas-liquid mixture by means of the use of a pump
US5073090A (en) * 1990-02-12 1991-12-17 Cassidy Joseph C Fluid piston compressor
AU1324195A (en) * 1994-01-06 1995-08-01 Ricom Engineering Limited Liquid recovery apparatus
US6224345B1 (en) * 1999-03-22 2001-05-01 Bijur Lubrication Corporation pressure/vacuum generator
US6264434B1 (en) * 1999-10-07 2001-07-24 Christian Carl Frank Air pressure driven two way fluid evacuation and expulsion system
BR0205940A (en) * 2001-08-23 2004-12-28 Neogas Inc Method and apparatus for filling a compressed gas storage flask
FR2864523B1 (en) * 2003-12-24 2006-12-22 Rivard PROCESS FOR PREVENTING THE FORMATION OF AN INSALUBRE AND / OR EXPLOSIVE ATMOSPHERE IN THE ENVIRONMENT OF A CISTERN AND A DEVICE FOR CARRYING OUT SAID METHOD
DE102004046316A1 (en) * 2004-09-24 2006-03-30 Linde Ag Method and apparatus for compressing a gaseous medium
DE102009010702A1 (en) * 2009-02-27 2010-09-02 Gneuß Kunststofftechnik GmbH Liquid ring vacuum pump
JP5698515B2 (en) * 2010-12-20 2015-04-08 川崎重工業株式会社 Fluid transfer device, ship equipped with the same, and fluid for transfer device
CA2899208C (en) * 2013-01-25 2021-04-20 Skyline Medical Inc. Fluid waste collection and disposal system and method
FR3009742B1 (en) * 2013-08-14 2019-05-17 Ortec Expansion METHOD AND UNIT FOR PUMPING FLAMMABLE PRODUCTS LIKELY TO FORM AN EXPLOSIVE ATMOSPHERE
US9765769B2 (en) * 2015-04-22 2017-09-19 C. Anthony Cox Sterile liquid pump with single use elements

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408960A (en) * 1981-09-11 1983-10-11 Logic Devices, Inc. Pneumatic method and apparatus for circulating liquids
US20130327298A1 (en) * 2007-12-20 2013-12-12 Volvo Technology Corporation Fuel-pumping system, method for operating a fuel-pumping system and fuel-injection system comprising a fuel-pumping system

Also Published As

Publication number Publication date
EP3359815A1 (en) 2018-08-15
FR3042236A1 (en) 2017-04-14
US20180283406A1 (en) 2018-10-04
FR3042236B1 (en) 2019-09-06
EP3359815C0 (en) 2023-06-07
WO2017060616A1 (en) 2017-04-13
CA3000795A1 (en) 2017-04-13

Similar Documents

Publication Publication Date Title
EP0727557B1 (en) Process and installation for charging a filling gas into an enclosure
EP3359815B1 (en) Method and device for pumping a product by suction
EP3033525B1 (en) Pumping method and unit for flamable products capable of forming an explosive atmosphere
EP4006340B1 (en) Device and method for pumping products with low vacuum evaporation
EP1116242B1 (en) Method and device for filling drums containing dangerous waste
EP3870346B1 (en) Liquid effluent treatment module
FR2711191A1 (en) Fluidic pump assembly.
AU2017284762B2 (en) Vacuum installation for industrial vacuum processes
RU2405731C2 (en) Method and system of drilling slime transfer
FR2640698A1 (en) Peristaltic pump
EP3140030A1 (en) Device for continuously feeding divided solids to a pressurised process or for continuously extracting divided solids from said process
EP3894060B1 (en) Device for injecting fluid into a liquid, method for cleaning said device, and effluent treatment installation
EP1518614B1 (en) Plant and process for aquifer remediation
JP2016022997A5 (en)
CA2239073A1 (en) Hydraulic reciprocating positive-displacement pumping system
FR2517719A1 (en) Device for treating and transporting waste water - comprises reservoir through which gas is percolated under action of control valves
KR20190001322A (en) System for collecting gas
EP4299903A1 (en) Device and method for sucking and pressurizing using a hydro-ejector.
EP4098872A1 (en) Mobile submersible pumping device
EP4116225A1 (en) Tank for storing products with horizontal draining by means of a membrane, and vehicle, in particular a sewer cleaner, provided with such a tank.
FR2721989A1 (en) Anti water-hammer unit for water circulation network
EP0488917A1 (en) Automatic machine for assembling or machining workpieces equipped with pneumatic cylinders and equipment for the filtration of the escaping air-oil mixture
EP2474674A1 (en) Siphon device with automatic priming
WO2017144787A1 (en) Compacting unit comprising a hydraulic ram, and method for reducing the volume of waste
FR2754019A1 (en) Compressed air water raising pump

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20180313

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20201002

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 602016080014

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: F04B0015020000

Ipc: B08B0009080000

Ref country code: DE

Ref legal event code: R079

Free format text: PREVIOUS MAIN CLASS: F04B0015020000

Ipc: B08B0009080000

RIC1 Information provided on ipc code assigned before grant

Ipc: F04B 37/14 20060101ALI20221220BHEP

Ipc: F04B 53/20 20060101ALI20221220BHEP

Ipc: F04B 41/02 20060101ALI20221220BHEP

Ipc: F04B 23/02 20060101ALI20221220BHEP

Ipc: B08B 9/093 20060101ALI20221220BHEP

Ipc: F04B 15/02 20060101ALI20221220BHEP

Ipc: B08B 9/08 20060101AFI20221220BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230201

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1573421

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230615

Ref country code: DE

Ref legal event code: R096

Ref document number: 602016080014

Country of ref document: DE

U01 Request for unitary effect filed

Effective date: 20230620

U07 Unitary effect registered

Designated state(s): AT BE BG DE DK EE FI FR IT LT LU LV MT NL PT SE SI

Effective date: 20230626

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230907

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

U20 Renewal fee paid [unitary effect]

Year of fee payment: 8

Effective date: 20230926

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230908

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20231019

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231007

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231007

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602016080014

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20240308

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231031