EP3814027A1 - Hochdruckreinigungsvorrichtung, reinigungsdispersion und anordnung hochdruckreinigungsvorrichtung zu oberfläche - Google Patents

Hochdruckreinigungsvorrichtung, reinigungsdispersion und anordnung hochdruckreinigungsvorrichtung zu oberfläche

Info

Publication number
EP3814027A1
EP3814027A1 EP19730772.1A EP19730772A EP3814027A1 EP 3814027 A1 EP3814027 A1 EP 3814027A1 EP 19730772 A EP19730772 A EP 19730772A EP 3814027 A1 EP3814027 A1 EP 3814027A1
Authority
EP
European Patent Office
Prior art keywords
cleaning
pressure
dispersion
particles
cleaning device
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.)
Pending
Application number
EP19730772.1A
Other languages
German (de)
English (en)
French (fr)
Inventor
Dr. Andreas SATTLER
Stefan Mayer
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.)
Washtec Holding GmbH
Original Assignee
Washtec Holding GmbH
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 Washtec Holding GmbH filed Critical Washtec Holding GmbH
Publication of EP3814027A1 publication Critical patent/EP3814027A1/de
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02Cleaning by the force of jets or sprays
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404Arrangements for supplying particulate material
    • B05B7/1431Arrangements for supplying particulate material comprising means for supplying an additional liquid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1481Spray pistols or apparatus for discharging particulate material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02Cleaning by the force of jets or sprays
    • B08B3/022Cleaning travelling work
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04Cleaning involving contact with liquid
    • B08B3/08Cleaning involving contact with liquid the liquid having chemical or dissolving effect
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C11/00Selection of abrasive materials or additives for abrasive blasts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S3/00Vehicle cleaning apparatus not integral with vehicles
    • B60S3/04Vehicle cleaning apparatus not integral with vehicles for exteriors of land vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/20Arrangements for agitating the material to be sprayed, e.g. for stirring, mixing or homogenising
    • B05B15/25Arrangements for agitating the material to be sprayed, e.g. for stirring, mixing or homogenising using moving elements, e.g. rotating blades
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0217Use of a detergent in high pressure cleaners; arrangements for supplying the same
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0223Electric motor pumps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0258Multiple lance high pressure cleaning station
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0007Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
    • B24C7/0015Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier

Definitions

  • High pressure cleaning device cleaning dispersion and arrangement of high pressure cleaning device to surface
  • the invention relates to a (brushless) high-pressure cleaning device for gentle cleaning, in particular fine cleaning, of surfaces soiled with fine particles, in particular motor vehicle surfaces, with a
  • High-pressure pump for conveying a cleaning product or a cleaning agent to a high-pressure jet nozzle, on which the cleaning product is in one
  • the present invention relates to a
  • High-pressure cleaning devices are known from the prior art, which radiate a cleaning product at high pressure onto an object, such as a vehicle, in order to remove dirt particles and undesirable substances via the action of the object
  • Post-treatments such as brush washing or manual polishing with wipes, should be (mostly) removed.
  • these remaining fine particles which are deposited, for example, during a normal drive with a vehicle, are known as so-called undesirable “gray veils”, which are particularly evident on light, especially white, painted surfaces and which are currently being removed with a lot of effort after treatment must become. It is therefore an object of the present invention to avoid or at least alleviate the disadvantages of the prior art and in particular to reduce one
  • a cleaning product and an arrangement of a high-pressure cleaning device and a surface to be cleaned with which surfaces which are both efficient and cost-effective and also gentle on the material, in particular vehicle surfaces, can be cleaned with a high degree of cleaning success, without the use of brushes and with a reduction in cleaning time can.
  • fine particles adhering to the surface should be reliably removed.
  • High-pressure cleaning device by the features of claim 1, with regard to a generic cleaning product according to the invention by the features of claim 9 and with regard to a generic arrangement of a high-pressure cleaning device to a surface to be cleaned
  • Cleaning product a cleaning dispersion with a carrier fluid, in particular water, and with solid cleaning particles with a density between 0.8 g / cm 3 and 3.5 g / cm 3 , in particular between 0.9 g / cm 3 and 2.2 g / cm 3 , and the
  • High-pressure cleaning device is configured such that a cleaning particle on leaving the high-pressure jet nozzle has a kinetic energy of at least 1 - 10 10 J and at most 2 - 10 ⁇ J, preferably of at least 2 -10 9 J and at most 7 -10 5 J, and entirely particularly preferably between at least 4 - 10 7 J and a maximum of 9 -10 6 J.
  • the high pressure jet emerging from the high pressure jet nozzle has a kinetic energy of at least 1 - 10 10 J and at most 2 - 10 ⁇ J, preferably of at least 2 -10 9 J and at most 7 -10 5 J, and entirely particularly preferably between at least 4 - 10 7 J and a maximum of 9 -10 6 J.
  • High pressure cleaning device is made of a cleaning dispersion with solid
  • Cleaning particles are formed, which with regard to an optimal (cleaning) effect both have to meet a specific range of density and also with a predetermined kinetic energy from the high-pressure jet nozzle
  • High-pressure cleaning device must step out. It has been shown in complex series of experiments and analyzes that exactly these two parameters, namely the density of the cleaning particles and the kinetic energy of an individual
  • Undercuts for example on a B-pillar of the vehicle, a mirror or a rear spoiler, because the cleaning particles can penetrate into areas which brushes usually do not reach, since they only wipe over the surface and do not get into gaps or undercuts.
  • the cleaning particles can be any suitable material.
  • the cleaning particles can be any suitable material.
  • Cleaning dispersion of the high-pressure cleaning device have an average longitudinal extent (longest dimension) of at least 20 pm and / or a maximum of 315 miti, in particular of at least 30 pm and / or a maximum of 200 pm. It has been shown that a further, essential parameter, which relates to a
  • the cleaning result of the high-pressure cleaning device affects the dimension of the cleaning particles contained in the high-pressure jet.
  • the lower limit of the dimension parameter of 20 pm ensures that the
  • Fine particles are removed by the impact impulse. On the other hand, good manageability and a still satisfactory cleaning effect can be guaranteed up to the upper limit of the dimension.
  • the speed of the high-pressure jet when it emerges from the high-pressure jet nozzle can preferably be at least 20 m / s and / or at most 80 m / s, in particular at least 40 m / s and / or at most 60 m / s.
  • the speed of the high-pressure jet when it emerges from the high-pressure jet nozzle thus corresponds to that
  • Cleaning dispersion or the cleaning particles have proven to be particularly advantageous for cleaning.
  • Blowing cleaning dispersion is formed.
  • the circulating device ensures that the cleaning particles do not deposit on the bottom or on the surface in the storage container, but that a homogeneous mixture of the
  • the cleaning dispersion is retained.
  • the cleaning dispersion also fulfills the requirements for good storability and stirrability.
  • the high-pressure cleaning device upstream of the high-pressure pump can have a feed line which contains the ready-to-use cleaning dispersion with the cleaning particles and the
  • Carrier fluid which in particular has water as the carrier fluid, before
  • the cleaning dispersion can either be sucked in by suppressing the high-pressure pump in front of the high-pressure area, or the cleaning dispersion can be fed to the high-pressure pump with the aid of a pressure booster pump.
  • a second supply line provides a further fluid, in particular Water, which together form the ready-to-use cleaning dispersion, so that the
  • Cleaning dispersion namely the further fluid, in particular water, can be added on site to the high-pressure device.
  • the further fluid in particular water
  • the high-pressure cleaning device can have a concentrate container (as a storage container) for storing the cleaning concentrate and the cleaning concentrate can be supplied via the first feed line by means of a metering device, in particular in the form of a metering pump. With the help of the metering pump, a precisely defined amount of the cleaning concentrate and the cleaning dispersion or the can be withdrawn from the concentrate container
  • High-pressure cleaning device in front of the high-pressure jet nozzle and downstream of the high-pressure pump have at least one high-pressure injector in order to
  • the cleaning concentrate is added in the high-pressure region, that is to say after the high-pressure pump, in order to combine it with another fluid conveyed by the high-pressure pump at high pressure
  • High pressure jet nozzle with the cleaning concentrate brings it to the high pressure before exiting and to a corresponding speed when exiting with accompanying kinetic energy of the cleaning particles.
  • the pressure generated by the high-pressure pump at the high-pressure jet nozzle can be between 20 and 60 bar.
  • the high pressure pump is designed in the form of a centrifugal pump. This type of pump provides an inexpensive and compact high pressure cleaning device pump capable of
  • the at least one high-pressure jet nozzle from which the high-pressure jet emerges is preferably designed in the form of a flat jet nozzle.
  • a large jet can be blasted with a large area within a short time in a defined manner.
  • Such a high-pressure cleaning device according to the invention can
  • the high pressure cleaning device in particular in the form of a portal washing system without brushes with high-pressure jet nozzles or as a washing line with high-pressure jet nozzles. It is also possible to use the high pressure cleaning device in a system with little or no degree of automation, e.g. in a self-service washing system, in which the user can apply the cleaning dispersion manually to the surface to be cleaned using a high-pressure lance.
  • the task is for a generic cleaning product for a
  • High-pressure cleaning device which is designed as a cleaning dispersion, a carrier fluid and solid cleaning particles dispersed or distributed in the carrier fluid, solved according to the invention in that the cleaning particles have a density between 0.8 have g / cm 3 and 3.5 g / cm 3 .
  • density is understood to mean the mass density which the base material of the cleaning particles has in solid form.
  • the polymer cleaning particles are preferred. Have polymers
  • the polymer cleaning particles have also proven to be particularly effective in their cleaning action. Another advantage of polymer cleaning particles is that they strongly contaminate the surface by the cleaning particles themselves
  • Polymer also has the advantage that the cleaning particles can be removed particularly easily after cleaning (by suitably adjusting the size of the cleaning particles), in particular rinsed off.
  • the cleaning particles contained in the cleaning dispersion are preferably property-stable in the carrier fluid.
  • property stable means that the cleaning particles do not or do not change in their properties over time in the cleaning dispersion after the creation of a suitable delivery form
  • the cleaning dispersion can be stored and pumped in particular at all times.
  • the requirement for the cleaning dispersion or its property is also that it can be stirred up even after a longer period of time.
  • the cleaning particles are also temperature-stable or temperature-resistant and withstand a high temperature.
  • the temperature of the cleaning dispersion is preferably in the region of room temperature and is in particular approximately 20 ° C.
  • the cleaning particles of the invention are provided.
  • Cleaning dispersion have an average longitudinal extent (longest dimension) of at least 20 pm and / or a maximum of 315 miti, in particular of at least 30 pm and / or a maximum of 200 pm.
  • the cleaning particles have a grain structure and in particular are microporous and / or have a star shape.
  • the shape of the cleaning particles also influences the desired one
  • Grain structure has a positive effect on the cleaning result.
  • the cleaning particles can be used
  • Cleaning dispersion have a mass fraction between 0.1% and 5%, in particular between 1% and 3%, of the cleaning dispersion. If the concentration or the mass fraction of the cleaning dispersion is too low, a necessary cleaning time is prolonged, whereas too high a concentration the cleaning dispersion makes it difficult to handle. A range between 0.1 and 5% by weight of the
  • Cleaning particles in the cleaning dispersion therefore weigh between one
  • the concentration or mass fraction of the cleaning particles is corresponding to a number of possible ones
  • Hitting the fine particles for a cleaning success is a crucial parameter.
  • the task is in a generic arrangement of one
  • both the density range of the cleaning particles and the range of the cleaning particles both the density range of the cleaning particles and the range of the
  • High-pressure cleaning device can have the features of the high-pressure cleaning device according to the invention.
  • a distance between the high-pressure cleaning device and the surface to be cleaned, in particular between the high-pressure jet nozzle and the surface to be cleaned can preferably be less than 1 meter.
  • FIG. 1 is a side view of a surface according to the prior art, in which fine particles remain despite the high-pressure jet applied,
  • Fig. 3 is a perspective view of the conceptually shown
  • Fig. 4 is a schematic conceptual representation of an inventive
  • High-pressure cleaning device of a second preferred embodiment with two feed lines in front of the high-pressure pump,
  • FIG. 5 shows a schematic cross-sectional view of a cleaning particle of a cleaning dispersion according to the invention of a preferred embodiment
  • Fig. 6 shows a microscopic section of an inventive
  • FIG. 1 shows a cross-sectional view of a surface on which fine particles remain despite cleaning with a high-pressure water jet.
  • the vertical high pressure water jet is deflected to the sides parallel to the surface.
  • High-pressure cleaning device created with which the fine particles can be removed mechanically without damaging the surface to be cleaned itself.
  • High pressure cleaning device 1 and the vehicle surface 2 The
  • High-pressure cleaning device 1 means for brushless cleaning
  • Flat jet nozzle 8 the cleaning dispersion 6 exits at high pressure as a high pressure jet 10 and finally strikes the vehicle surface 2 to be cleaned.
  • three flat jet nozzles 8 are shown by way of example, which are connected via a common distributor line 9.
  • Polyurethane with a density between 1 g / cm 3 and 1, 25 g / cm 3 are present and from the flat jet nozzle 8 with a kinetic energy between at least 4 -10 7 J and exit a maximum of 9 -10 6 years.
  • High pressure jet 10 contained cleaning particles 12 on the at
  • Cleaning particles 12 when they strike vehicle surface 2 are approximately equal to the kinetic energy of cleaning particles 6 when they emerge from flat jet nozzle 8.
  • High-pressure pump 4 feeds via a booster pump 22.
  • the pressure booster pump 22 As an alternative to this embodiment with the pressure booster pump 22, the
  • High-pressure cleaning device 1 can also be designed without a booster pump 22, so that the high-pressure pump 4 has a negative pressure
  • the cleaning dispersion 6 itself.
  • the cleaning dispersion 6 is held in a storage container 24 of the high-pressure cleaning device 1 and fed to the high-pressure pump 4 via the feed line 20.
  • the high-pressure cleaning device 1 for the storage container 24 has a circulating device in the form of a stirring device 26, which prevents the cleaning particles 12 from being concentrated in areas, for example on a bottom of the storage container 24.
  • Stirring device 26 can of course also be used with a circulating pump.
  • the stirring device has a controllable electric motor as a drive, on the output shaft of which a stirrer is attached, which stirs the cleaning dispersion 6.
  • Near the bottom of the reservoir 24 is at the end of the feed line Intake connector 28 is provided, which allows a good fluid intake.
  • the intake manifold 28 can have an upstream filter in order to prevent larger or clumped cleaning particles 12 or undesired foreign bodies from being fed to the flap pressure pump 4.
  • FIG. 3 shows a perspective view of the flap pressure cleaning device 1 conceptually shown in FIG. 2 in an embodiment as
  • a cleaning frame 32 is provided, which extends in a direction of travel A of a vehicle F
  • the cleaning frame 32 which is translationally movable in the direction of travel A, has a nozzle bar 36 which is movable in the vertical direction between two vertical arms 34 and on which, in the longitudinal direction thereof, a plurality, e.g. seven, flat jet nozzles 8 are lined up. These flat jet nozzles 8 move with the cleaning frame 32 both in the horizontal direction and via the nozzle bar 36 in the vertical direction with respect to the frame structure 30.
  • a plurality, e.g. seven, flat jet nozzles 8 move with the cleaning frame 32 both in the horizontal direction and via the nozzle bar 36 in the vertical direction with respect to the frame structure 30.
  • linearly moving and vertically movable flat jet nozzles 8 are realized, which in the vehicle F in particular the bonnet, the roof and the Trunk area can be cleaned gently.
  • the flat jet nozzles 8 on the nozzle strip 36 can additionally be rotated in one plane in the vertical direction and in the direction of travel A.
  • the nozzle bar 36 can be seen as a section of the distribution line 9.
  • the cleaning frame 32 of the flap pressure cleaning device 1 is fluidly connected via a line running on the arm 34 and via a flexible hose 38 to the remaining section of the distributor line 9 and allows a translational movement of the cleaning frame 32.
  • the flap pressure cleaning device 1 has on the frame structure 30 on two rear vertical struts as seen in the direction of travel A. flat jet nozzles 8 pointing inwards toward the vehicle F passing through for cleaning the side surfaces of the vehicle F. In a further embodiment, not shown, these flat jet nozzles can also be controllable
  • FIG. 4 shows a schematic concept illustration in a side view of a high-pressure cleaning device 101 according to the invention of a further, second preferred embodiment.
  • FIG. 4 shows a schematic concept illustration in a side view of a high-pressure cleaning device 101 according to the invention of a further, second preferred embodiment.
  • the high-pressure cleaning device 101 has two feed lines, in which a first feed line is again a feed line 120, which contains a cleaning concentrate 106 with the cleaning particles 12 contained and with a small amount of water and a washing fluid as carrier fluid 114 of the high-pressure pump 4 feeds by means of a finely adjustable metering pump 122 and in which a second feed pipe 123 supplies water in order to collect the ready-to-use product
  • the cleaning concentrate is kept in a concentrate container 124 (as a kind of storage container) and by means of a
  • Stirring device 126 stirred as a circulating device and kept homogeneous.
  • Cleaning dispersion 206 with cleaning particles 212 The cleaning particles 212 which are property-stable (water-insoluble) in the cleaning dispersion 206 with a
  • Drain dryer can be used. This allows a simple derivation from
  • High-pressure cleaning device of an alternative embodiment can also be designed as a standing arch through which an object to be cleaned is moved or through which a vehicle passes.
  • the space requirement is particularly small.
  • High-pressure cleaning device can alternatively be designed in one embodiment as a portable, compact system, similar to a portable high-pressure cleaner.
  • a user With a high-pressure lance, a user can direct the high-pressure jet onto the area to be cleaned and apply it there.
  • the user is provided with a portable high-pressure cleaning device according to the invention, which he can also use at home, for example, in the courtyard (with a suitable catch basin for the sprayed cleaning dispersion if it is not biodegradable).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP19730772.1A 2018-06-27 2019-06-13 Hochdruckreinigungsvorrichtung, reinigungsdispersion und anordnung hochdruckreinigungsvorrichtung zu oberfläche Pending EP3814027A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018115510.7A DE102018115510A1 (de) 2018-06-27 2018-06-27 Hochdruckreinigungsvorrichtung, Reinigungsdispersion und Anordnung Hochdruckreinigungsvorrichtung zu Oberfläche
PCT/EP2019/065601 WO2020002001A1 (de) 2018-06-27 2019-06-13 Hochdruckreinigungsvorrichtung, reinigungsdispersion und anordnung hochdruckreinigungsvorrichtung zu oberfläche

Publications (1)

Publication Number Publication Date
EP3814027A1 true EP3814027A1 (de) 2021-05-05

Family

ID=66867151

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19730772.1A Pending EP3814027A1 (de) 2018-06-27 2019-06-13 Hochdruckreinigungsvorrichtung, reinigungsdispersion und anordnung hochdruckreinigungsvorrichtung zu oberfläche

Country Status (5)

Country Link
US (1) US20210252535A1 (zh)
EP (1) EP3814027A1 (zh)
CN (1) CN112423903A (zh)
DE (1) DE102018115510A1 (zh)
WO (1) WO2020002001A1 (zh)

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US20210381218A1 (en) * 2020-06-08 2021-12-09 Thomas P. Suiter Sewer Equipment Cleaning Systems
US11639156B2 (en) * 2021-03-17 2023-05-02 Jose Garcia Portable vehicle washing assembly
CN116651642B (zh) * 2023-07-26 2023-10-10 江苏东方泵业有限公司 一种高压清洗泵专用喷枪

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Also Published As

Publication number Publication date
DE102018115510A1 (de) 2020-01-02
WO2020002001A1 (de) 2020-01-02
CN112423903A (zh) 2021-02-26
US20210252535A1 (en) 2021-08-19

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