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WO2003039774A1 - Device for cleaning fuel tanks - Google Patents

Device for cleaning fuel tanks Download PDF

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Publication number
WO2003039774A1
WO2003039774A1 PCT/MX2002/000060 MX0200060W WO03039774A1 WO 2003039774 A1 WO2003039774 A1 WO 2003039774A1 MX 0200060 W MX0200060 W MX 0200060W WO 03039774 A1 WO03039774 A1 WO 03039774A1
Authority
WO
WIPO (PCT)
Prior art keywords
tank
diesel
disel
tanks
solids
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.)
Ceased
Application number
PCT/MX2002/000060
Other languages
Spanish (es)
French (fr)
Inventor
Agustin Lara Solis
Alicia Lara Zamora
Agustin Lara Zamora
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2003039774A1 publication Critical patent/WO2003039774A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/08Cleaning containers, e.g. tanks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/08Cleaning containers, e.g. tanks
    • B08B9/093Cleaning containers, e.g. tanks by the force of jets or sprays

Definitions

  • the machine system is good, but it is not enough to clean well
  • the machine is formed on its outside
  • suction arm in which it can be a
  • Reel will be placed at the ends of the machine.
  • Output consists of 10 filter plates using paper of a miera.
  • outlet hose is rolled, using a hose from 1 to 2 of a

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

The invention relates to a device that is used for the preventive and corrective maintenance of diesel tanks. The inventive device comprises a suction arm and an expulsion arm which are inserted in the tank in order to absorb the diesel and the solids created by the tank. Moreover, the expulsion arm is used to clean the inside of the tank using the pressure created by the transfer pump. The aforementioned diesel flows through a pre-filter which is disposed horizontally in order to capture the large solids and which is connected to a sensor. Said sensor is used to analyse the diesel, displaying the quantity of suspended solids contained in the tank and the humidity of said tank on a computer screen. The inventive device comprises the most advanced technology which can be used to clean tanks requiring maintenance in an effective, rapid, precise and reliable manner. Furthermore, the device is designed to ensure that tanks are maintained in good condition. More specifically, the device prevents diesel pumps in truck tractors and injectors from being damaged by the bacteria inside the tank, given that said bacteria produce the black smoke which issues from the exhaust and which is dangerous for the environment.

Description

MAQUINA PARA EL MANTENIMIENTO PREVENTIVO Y CORRECTIVO DE TANQUESMACHINE FOR PREVENTIVE AND CORRECTIVE MAINTENANCE OF TANKS

DE DISELOF DISEL

ANTECEDENTES DE LA INVENCIÓNBACKGROUND OF THE INVENTION

Hoy en día la maquina para el mantenimiento de tanques de disel estáToday the machine for the maintenance of disel tanks is

compuesta por: un motor 1 HP, una bomba de engranes, prefíltro, unComposed of: a 1 HP engine, a gear pump, pre-filter, a

filtro prensa, una válvula de escape, dos mangueras (una de entrada yPress filter, an exhaust valve, two hoses (one inlet and

otra de salida), una válvula de alivio y un manómetro que indica laanother outlet), a relief valve and a pressure gauge that indicates the

presión del flujo instalado en la prensa.flow pressure installed in the press.

El sistema de máquina es bueno, pero no es suficiente para limpiar bienThe machine system is good, but it is not enough to clean well

el tanque ya que únicamente se le conducen dos mangueras: una es lathe tank since only two hoses are driven: one is the

que succiona y disel y otra es la que lo retorna al tanque, con éstas sewhich sucks and disels and another is the one that returns it to the tank, with these

purifica el disel pero no se logra el objetivo, el cual es de mantenerpurifies the disel but the goal is not achieved, which is to maintain

limpio el tanque.I clean the tank.

Cuenta con un sistema prefiltro; para retener todas las partículasIt has a prefilter system; to retain all particles

mayores provenientes del tanque. Su fabricación es totalmenteolder from the tank. Its manufacturing is totally

inadecuada, ya que al momento de abrirlo automáticamente se derramainadequate, since at the time of opening it automatically spills

el disel que contiene este prefiltro y el proveniente del depósito de lathe disel that contains this prefilter and the one coming from the deposit of the

válvula de alivio, estos son aproximadamente 10 L. Estos 10 L. se van directamente al suelo y ocasionan daños al mediorelief valve, these are approximately 10 L. These 10 L. go directly to the ground and cause damage to the environment

ambiente y aparte es totalmente inseguro, por lo que se tiene que utilizarenvironment and apart is totally insecure, so it has to be used

una charola de lo ancho y largo de la maquina para que el disel caiga ena tray the width and length of the machine so that the disel falls in

la misma. Otro de los defectos que tiene esta máquina es que cuentathe same. Another defect that this machine has is that it counts

solamente con un manómetro el cual nada mas mide la presión que hayonly with a pressure gauge which only measures the pressure

en la prensa y lo que se necesita es saber qué tan contaminado está elin the press and what is needed is to know how contaminated the

disel y qué cantidad de sólidos trae; además el sistema de flotadores quedisel and how much solids it brings; also the float system that

trae no es adecuado ya que al momento de que alivia el diesel a la prensabrings is not suitable because at the time that relieves diesel to the press

éste regresa contaminando, además no tiene la forma para retener losit comes back contaminating, it also has no way to retain the

sólidos que caen al flotador y esto ocasiona que la suciedad esté dandosolids that fall to the float and this causes dirt to be giving

vueltas y no hay una claridad en saber si los sólidos son el tanque o delturns and there is no clarity in knowing if the solids are the tank or the

depósito del flotador.float tank.

Sus llantas son de un material rígido y esto no permite un manejoIts tires are made of rigid material and this does not allow handling

adecuado ya que con cualquier cosa se puede atorar e impedir que seadequate since with anything you can get stuck and prevent it

maniobre en forma segura, y ocasionar accidentes, además cuenta conmaneuver safely, and cause accidents, also has

dos tubos para maniobrarla y éstos son los que pueden causar daños atwo tubes to maneuver it and these are the ones that can cause damage to

alguna parte del cuerpo siendo que la máquina se empina fácilmente. AsíSome part of the body being that the machine steep easily. So

como esta, maquina existen otras como por ejemplo: una que cuenta conlike this one, there are other machines such as: one that has

una motobomba pero sabemos que ésta no tiene la capacidad ni la fuerza necesaria para extraer los sólidos de un tanque ya que su capacidad dea motor pump but we know that it does not have the capacity or the strength necessary to extract solids from a tank since its capacity to

traslado es de una aproximación de 50 L. por minuto y no cuenta con lostransfer is approximately 50 L. per minute and does not have the

brazos de absorción y expulsión pues éstos son la clave para hacer elabsorption and expulsion arms as these are the key to make the

servicio. Con la finalidad de obtener un mejor servicio, se pensó en laservice. In order to obtain a better service, the

tecnología más avanzada para la máquina, y protegerla por medio de lamore advanced technology for the machine, and protect it by means of the

presente solicitud. present request

DESCRIPCIÓN DE LA INVENCIÓNDESCRIPTION OF THE INVENTION

Los detalles característicos de esta novedosa máquina se muestranThe characteristic details of this novel machine are shown

claramente en la siguiente descripción y en los dibujos que seclearly in the following description and in the drawings that

acompañan, así como una ilustración de aquélla y siguiendo los mismosaccompany, as well as an illustration of it and following them

signos de referencia para indicar las partes y las figuras mostradas.reference signs to indicate the parts and figures shown.

Con referencia a la figura (No.l), la maquina está formada en su exteriorWith reference to figure (No. 1), the machine is formed on its outside

por (No. 1) una estructura de aluminio, para que ésta sea más ligera yby (No. 1) an aluminum structure, so that it is lighter and

sea más maniobrable con (No.2) un depósito en la parte superior enbe more maneuverable with (No.2) a tank on the top in

forma de tanque, (No.3) toda la tubería esta hecha de aluminio ya queTank shape, (No.3) The entire pipe is made of aluminum since

con este tipo de material evitamos la corrosión y la hace más ligera,With this type of material we avoid corrosion and make it lighter,

(No.4) llantas inflables, con éstas obtendremos un mejor desplazamiento(No.4) inflatable tires, with these we will get a better displacement

y será más maniobrable. (No.5) instalación eléctrica, ésta contiene unand it will be more maneuverable. (No.5) electrical installation, it contains a

sistema de paro automático en casos de variaciones en la corriente.automatic stop system in cases of current variations.

La construcción se aprecia en la figura (No.2), pudiendo observase losThe construction can be seen in figure (No.2), being able to observe the

cambios efectuados; (No.l) brazo de succión en cual puede ser unachanges made; (No.l) suction arm in which it can be a

configuración cilindrica, prismática o troncocónica, para la mejorcylindrical, prismatic or truncated conical configuration, for the best

succión de sólidos en el fondo del tanque, éstos estarán dotados desolid suction at the bottom of the tank, these will be equipped with

medidas según la dificultad del tanque, también tendrán ciertos dobleces que necesiten, siendo éstos de un material como el aluminio, aceroMeasured according to the difficulty of the tank, they will also have certain folds that they need, being these of a material like aluminum, steel

inoxidable, o de un material flexible. Se pensó en éstos para así poderstainless, or a flexible material. They thought about these so that they could

sustraer todos los sólidos e impurezas del tanque, y tener un controlsubtract all solids and impurities from the tank, and have control

sobre el tanque, éstos se introducen y uno absorbe y controla todo elon the tank, these are introduced and one absorbs and controls all the

tanque llegando a lugares donde los sólidos, agua y más impurezas notank reaching places where solids, water and more impurities do not

puedan salir tan fácil y con éstos es la solución a este problema. El otroThey can get out so easy and with these is the solution to this problem. The other

brazo regresa el disel a presión para desprender y remover las impurezasarm returns the pressure plate to detach and remove impurities

que contenga el tanque y con el mismo disel se lava y sin necesidad dethat contains the tank and with the same disel is washed and without the need of

químicos o por medio de agua, (No.2) carrete donde es guardada lachemical or by means of water, (No.2) reel where the

manguera de entrada para que no estorbe al ser operada la máquina, esteinlet hose so that it does not interfere when the machine is operated, this

carrete será colocado en los extremos de la máquina.Reel will be placed at the ends of the machine.

Con este tipo de carreras evitamos estar arrastrando las mangueras y queWith this type of racing we avoid dragging the hoses and that

éstas estorben, además que es más estético, (No.3) prefiltro colocado enthese hinder, in addition to being more aesthetic, (No.3) prefilter placed in

posición vertical con un cedazo, para la retención de partículas mayoresvertical position with a sieve, for the retention of larger particles

a 1 cm. Con este prefiltro colocado en forma vertical, ya que la anterior1 cm With this prefilter placed vertically, since the previous

de forma horizontal era muy problemático, al momento de destaparlo elhorizontally it was very problematic, when uncovering the

disel caía y no tenia un depósito en el cual retener este disel, se pensó endisel fell and did not have a deposit in which to retain this disel, he thought of

un tipo mejor que es de forma prismática y además cuenta con una better type that is prismatic and also has a

desnivel para que en éste se acumulara todo tipo de partículas mayores a V2 cm. Y aparte con un sistema de dren para que al momento de retirarunevenness so that all kinds of particles larger than V2 cm And apart with a drain system so that when withdrawing

dichas partículas, el disel no caiga sin control y entonces lo drenamos ysaid particles, the disel does not fall out of control and then we drain it and

podemos trabajar mas seguros, además se le colocó un manómetro parawe can work safer, plus a pressure gauge was placed to

que nos indique cuando este lleno el prefiltro, además se le puso unato indicate when the prefilter is full, in addition a

tapa superior de acrílico para poder observar dentro de este se tapa oAcrylic top cap to see inside this cap or

sature de papel o sustancias que impidan el flujo de el diesel (No.4)saturate paper or substances that prevent the flow of diesel (No.4)

sensor analizador de sólidos en suspensión, humedad y la densidad delsuspended solids, humidity and density analyzer sensor

disel, es lo que este sensor nos analizará para saber el contenido deldisel, is what this sensor will analyze to know the content of the

tanque ya que de esta forma sabremos que es lo que los tanquestank because in this way we will know what the tanks are

contienen, (No.5) mata bacterias por medio de 03, éste mata las bacteriascontain, (No.5) kill bacteria by means of 03, it kills the bacteria

creadas en el tanque.Created in the tank.

Estas bacterias son el factor número uno que contamina el disel y elThese bacteria are the number one factor that pollutes the disel and the

tanque, ya que éste crea agua y al tener agua obtendremos vida y el matatank, since it creates water and by having water we will get life and kill

bacterias es el que las eliminará por medio 03. y así protegemos losbacteria is the one that will eliminate them by means 03. and thus we protect the

inyectores y bombas de disel del tractocamión, (No.6) bomba detruck injectors and disel pumps, (No.6) pump

transferencia de 2, ésta puede variar su medida ya que gracias a ésta estransfer of 2, this can vary its size because thanks to this it is

la que nos dará la presión que necesitamos para el desprendimiento dewhich will give us the pressure we need for the detachment of

los sólidos en el interior del tanque. Esta es de engranes para obtener unathe solids inside the tank. This is gears to get a

mayor fuerza de absorción y mayor seguridad por sus engranes, (No.7) motor a prueba de explosión 1HP. Este motor tiene la capacidadgreater absorption force and greater safety due to its gears, (No.7) 1HP explosion proof engine. This engine has the capacity

suficiente para mover la bomba de transferencia, y además es totalmenteenough to move the transfer pump, and it is also totally

cerrado para evitar que el diesel pueda penetrar y provocar accidentes,closed to prevent diesel from penetrating and causing accidents,

(No.8) filtro prensa con un diseño circular, con 3 orificios de entrada y 3(No.8) filter press with a circular design, with 3 inlet holes and 3

de salida, consta con 10 placas filtradoras usando papel de una miera.Output, consists of 10 filter plates using paper of a miera.

Con este sistema de filtración se apreciará la cantidad de sólidos porWith this filtration system you will appreciate the amount of solids per

tanque; se hizo este tipo de diseño para tener un campo más grande detank; this type of design was made to have a larger field of

filtración, (No.9) filtro con cartuchos; es para la retención de sólidos quefiltration, (No.9) filter with cartridges; it is for the retention of solids that

se encuentran en la prensa ya que al momento de cambiar los filtrosThey are in the press because when changing filters

estos sólidos crean la superficie y son dirigidos a este filtro para impedirthese solids create the surface and are directed to this filter to prevent

que vayan directo a la válvula de escape la cual regresa el diselgo straight to the exhaust valve which returns the disel

contenido la prensa. Este disel ya filtrado pesa a la válvula de alivioPress content. This filtered filter weighs the relief valve

(flotador) para que regrese a la prensa ya limpio y no estar reciclando los(float) to return to the press and clean and not be recycling

mismos sólidos, (No.10) válvula de alivio (flotador) ésta regresa elsame solids, (No.10) relief valve (float) it returns the

diesel ya limpio acumulado que la prensa tiende a fugar, el cual noaccumulated clean diesel that the press tends to leak, which does not

permite que la máquina se sature de disel, (No. l l) carrete donde laallows the machine to saturate with disel, (No. l l) reel where the

manguera de salida es enrollada, usando una manguera de 1 a 2de unaoutlet hose is rolled, using a hose from 1 to 2 of a

configuración totalmente resistente al disel y duradera para los cambiosfully disel-resistant and durable configuration for changes

de temperatura ya sea altas o bajas; estos carretes facilitarán el manejo de ésta, (No.12) brazo de salida es el que nos ayuda a obtener una eficazof temperature either high or low; these reels will facilitate handling of this, (No.12) output arm is the one that helps us obtain an effective

limpieza del interior del tanque, ejerciendo una presión por la bombacleaning the inside of the tank, exerting a pressure by the pump

para que el disel salga a su vez a presión, ya que tiene un doblez en laso that the disel in turn comes out under pressure, since it has a fold in the

punta, éste se ha adecuado a los distintos tanques que existen para tenertip, this one has adapted to the different tanks that exist to have

el control de la limpieza y abarcar las paredes de dichos tanques,cleaning control and covering the walls of said tanks,

(No.13) carrete para el cable eléctrico de la maquina, éste se pensó para(No.13) reel for the machine's electrical cable, this one was thought to

evitar estarlo enrollando en cualquier lado sin que éste tenga un lugaravoid being rolled up anywhere without it having a place

específico, y es por eso que se le puso este carrete, además es másspecific, and that is why this reel was put on it, it is also more

práctico y menos estorboso, (No.14) unidad de controles, puede ser unaPractical and less cumbersome, (No.14) control unit, can be a

computadora portátil o bien un tablero, éste es para retener toda lalaptop or a board, this is to retain all the

información de cada tanque que sea lavado y además nos permitiráinformation of each tank that is washed and will also allow us

observar por medio de gráficas u otra herramienta, las impurezas queobserve by means of graphs or another tool, the impurities that

pasen por el censor. go through the censor.

Claims

REIVINDICACIONESHabiendo descrito suficientemente mi invención, considero como unanovedad y por lo tanto reclamo como mi exclusiva propiedad locontenido en las siguientes cláusulas: CLAIMS Having described my invention sufficiently, I consider it as a new property and therefore claim as my exclusive property contained in the following clauses: 1. Máquina para el mantenimiento preventivo y correctivo de tanques1. Machine for preventive and corrective maintenance of tanks de diesel, consta con unos brazos de succión y expulsión de diesel,of diesel, consists of some suction and ejection arms of diesel, siendo éstos de cualquier forma convencional y con unabeing these in any conventional way and with a configuración cilindrica, prismática o troncocónica, caracterizadoscylindrical, prismatic or truncated conical configuration, characterized esencialmente por que los brazos se pueden acoplar según laessentially because the arms can be coupled according to the dificultad de la limpieza del tanque, siendo éstos de forma rígida odifficulty of cleaning the tank, these being rigid or flexible.flexible. Estos brazos estarán dotados de dimensiones adecuadas para cadaThese arms will be equipped with suitable dimensions for each tipo de tanque y al absorber la sustancia pasará por un prefiltrotype of tank and when absorbing the substance will go through a prefilter colocado de una posición horizontal, para evitar el derramamientoplaced in a horizontal position, to prevent spillage de disel al suelo y ocasionar daños al medio ambiente, ya que laof disel to the ground and cause damage to the environment, since the posición adecuada es en forma horizontal y para facilitar suproper position is horizontally and to facilitate your mantenimiento cuenta con un sistema de dren, el cual impide que el diesel sea derramado y se tenga un control, además cuenta conmaintenance has a drain system, which prevents diesel is spilled and there is control, it also has un manómetro el cual nos indica cuando este lleno y podamosa pressure gauge which tells us when it is full and we can destaparlo y drenar los sólidos acumulados el prefiltro es deuncover it and drain the accumulated solids the prefilter is of características prismáticas o cilindricas teniendo un orificio deprismatic or cylindrical features having a hole of entrada y otro de salida, compuesto por un cedazo, para retener losentry and exit, consisting of a sieve, to retain the sólidos.solid. El conjunto de filtros cilindricos encapsulados en un envase deThe set of cylindrical filters encapsulated in a container of forma convencional, es para la retención de sólidos provenientesConventional way, it is for the retention of solids from de la prensa. Evitando que las impurezas sean retornadas a lafrom the press. Preventing impurities from being returned to the prensa.press. 2. Maquina para el mantenimiento preventivo y correctivo de tanques2. Machine for preventive and corrective maintenance of tanks de disel, según la reivindicación 1, caracterizada por unos brazosof disel, according to claim 1, characterized by arms de succión y expulsión, y un prefiltro el cual esta conectado a unof suction and expulsion, and a prefilter which is connected to a censor cuya función es analizar las impurezas del disel y aunadocensor whose function is to analyze the impurities of the disel and combined una base informática con pantalla.a computer base with screen. 3. Máquina para el mantenimiento preventivo y correctivo de tanques3. Machine for preventive and corrective maintenance of tanks de disel, según la reivindicación 2, caracterizada porque el censor analizador mide los sólidos en suspensión del disel y la humedad queof disel, according to claim 2, characterized in that the censor analyzer measures the suspended solids of the disel and the humidity that éste contiene; éstos los podemos apreciar en una pantalla electrónica.this contains; These can be seen on an electronic screen. Los caracteres de tracción que van a los brazos por mangueras de unaThe traction characters that go to the arms by hoses of a longitud convencional son de un material semiflexíble. Conventional length are made of a semi-flexible material.
PCT/MX2002/000060 2001-09-24 2002-06-28 Device for cleaning fuel tanks Ceased WO2003039774A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MXPA01000033 2001-09-24
MX000033 2001-09-24

Publications (1)

Publication Number Publication Date
WO2003039774A1 true WO2003039774A1 (en) 2003-05-15

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ID=34101940

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PCT/MX2002/000060 Ceased WO2003039774A1 (en) 2001-09-24 2002-06-28 Device for cleaning fuel tanks

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2241444A1 (en) * 2003-06-30 2005-10-16 Cd Filtracion, S.A. Cleaning of e.g. liquid fuel tanks comprises filtration and cleaning of fuel for reintroduction into tank with or without additives
WO2006016853A1 (en) * 2004-08-13 2006-02-16 Sia Engineering Company Limited Apparatus for the maintenance of aircraft
CN103920682A (en) * 2014-04-15 2014-07-16 安徽理工大学 Portable dustbin cleaning device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2647639A (en) * 1948-08-12 1953-08-04 Raymond C Grein Apparatus for cleaning tanks and the like
FR2690857A1 (en) * 1992-05-06 1993-11-12 Claude Marcel Cleaning fuel and Diesel tanks - by sucking fuel in tank to be cleaned and sludge at bottom then driving back under pressure etc. and sucking out again
US5409025A (en) * 1993-10-06 1995-04-25 Semler Industries Inc. Apparatus and method for cleaning underground liquid fuel storage tanks
US6039056A (en) * 1996-04-03 2000-03-21 Verbeek; Diederik Geert Computer controlled apparatus and method for the cleaning of tanks

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2647639A (en) * 1948-08-12 1953-08-04 Raymond C Grein Apparatus for cleaning tanks and the like
FR2690857A1 (en) * 1992-05-06 1993-11-12 Claude Marcel Cleaning fuel and Diesel tanks - by sucking fuel in tank to be cleaned and sludge at bottom then driving back under pressure etc. and sucking out again
US5409025A (en) * 1993-10-06 1995-04-25 Semler Industries Inc. Apparatus and method for cleaning underground liquid fuel storage tanks
US6039056A (en) * 1996-04-03 2000-03-21 Verbeek; Diederik Geert Computer controlled apparatus and method for the cleaning of tanks

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2241444A1 (en) * 2003-06-30 2005-10-16 Cd Filtracion, S.A. Cleaning of e.g. liquid fuel tanks comprises filtration and cleaning of fuel for reintroduction into tank with or without additives
ES2247894A1 (en) * 2003-06-30 2006-03-01 Cd Filtracion, S.A. Cleaning of e.g. liquid fuel tanks comprises filtration and cleaning of fuel for reintroduction into tank with or without additives
ES2241444B1 (en) * 2003-06-30 2007-02-01 Cd Filtracion, S.A. CLEANING, FILTRATION AND TRANSITIONAL PROCEDURE, AND DEVICE FOR YOUR PRACTICE.
ES2247894B1 (en) * 2003-06-30 2007-05-01 Cd Filtracion, S.A. IMPROVEMENT IN THE OBJECT OF PATENT APPLICATION P200301521 FOR "CLEANING, FILTRATION AND TRANSIT PROCEDURE, AND DEVICE FOR PUTTING INTO PRACTICE.
WO2006016853A1 (en) * 2004-08-13 2006-02-16 Sia Engineering Company Limited Apparatus for the maintenance of aircraft
CN103920682A (en) * 2014-04-15 2014-07-16 安徽理工大学 Portable dustbin cleaning device

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