EP3639929B1 - Flüssigkeitsspritzanlage und entsprechendes verfahren - Google Patents

Flüssigkeitsspritzanlage und entsprechendes verfahren Download PDF

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Publication number
EP3639929B1
EP3639929B1 EP19203990.7A EP19203990A EP3639929B1 EP 3639929 B1 EP3639929 B1 EP 3639929B1 EP 19203990 A EP19203990 A EP 19203990A EP 3639929 B1 EP3639929 B1 EP 3639929B1
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EP
European Patent Office
Prior art keywords
fluid
injector
scraper
volume
liquid
Prior art date
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Active
Application number
EP19203990.7A
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English (en)
French (fr)
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EP3639929A1 (de
Inventor
Philippe Foury
David Vincent
Cyrille MEDARD
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Exel Industries SA
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Exel Industries SA
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Publication of EP3639929A1 publication Critical patent/EP3639929A1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/081—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to the weight of a reservoir or container for liquid or other fluent material; responsive to level or volume of liquid or other fluent material in a reservoir or container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/149—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet characterised by colour change manifolds or valves therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/16—Arrangements for supplying liquids or other fluent material
    • B05B5/1608—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive
    • B05B5/1675—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive the supply means comprising a piston, e.g. a piston pump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/1481—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet comprising pigs, i.e. movable elements sealingly received in supply pipes, for separating different fluids, e.g. liquid coating materials from solvent or air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B05B12/18—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area using fluids, e.g. gas streams

Definitions

  • the projection member 13 is suitable for receiving the first fluid F and for projecting the first fluid F.
  • the angle ⁇ is greater than or equal to the angle ⁇ between the first axis A1 and the second axis A2.
  • the angle ⁇ is greater than or equal to 5 °.
  • the electromagnet 55 generates the magnetic field M, which imposes on the scraper 20 a magnetic force tending to align the third axis A3 with the first axis A1.
  • the scraper 20 therefore pivots about the pivot axis Ap to its second position.
  • the holding system then makes it possible to maintain the scraper 20 in position in a particular portion of the circulation duct 15 despite the reduction in friction between the scraper 20 and the circulation duct 15 due to the difference in the internal and external diameters Di and De1.
  • This immobilization is particularly useful in the event of interruption of the circulation step before the entire duct 15 has been traversed by the scraper 20.
  • the shell 40 is made of a flexible polymer material and provided so that a central portion 57 of the shell 40 deforms radially outwardly of the shell 40 when the end walls 46 are brought together. the other.
  • the elastic member 60 exerts on the end walls 46 an elastic force tending to move the end walls 46 away from each other.
  • the elastic element 60 is configured to exert an elastic force having a value strictly greater than a pressure force tending to bring the end walls 46 towards one another when the pressure in the circulation duct 15 is less than or equal to the pressure threshold.
  • the elastic element 60 is further configured to exert an elastic force having an intensity strictly less than a pressure force tending to bring the end walls 46 closer to each other when the pressure in the circulation duct 15 is strictly greater than the pressure threshold.
  • the elastic element 60 is configured to maintain the scraper 20 in its non-crushed configuration when the pressure in the circulation duct 15 is less than or equal to the pressure threshold, and to allow the scraper 20 to tilt. in its overwritten configuration when the pressure is strictly greater than the pressure threshold.
  • the elastic element 60 is, for example, a spring such as a coil spring. It should be noted that other types of elastic elements 60 may be considered.
  • the pressure in the circulation duct 15 has the first pressure value.
  • the scraper 20 is therefore in its uncrushed configuration.
  • the injector increases the pressure in the circulation duct from the first value to the second value. For example, the valve 22 allowing the first fluid F to exit from the pipe circulation 15 is closed, and the injector injects second fluid into the circulation duct 15 until the second pressure value is reached.
  • the crushing portion 70 is configured to exert an elastic force having a value strictly greater than a pressure force tending to bring the two end portions 65 closer to each other when the pressure in the pressure duct. circulation 15 is less than or equal to the pressure threshold.
  • Ferromagnetism refers to the ability of certain bodies to become magnetized under the effect of an external magnetic field and to retain part of this magnetization.
  • the magnetic field generator 55 is, for example, similar to the magnetic field generators 55 used in the second example described above.
  • the method then comprises an attraction step replacing, for example, the pivoting step.
  • the fourth installation example 10 is particularly easy to implement.
  • the method includes a first projection step, a circulation step, a return step and a second projection step.
  • the first projection step comprises determining a first volume of first fluid F.
  • the first volume is the volume of first fluid F which has been projected since the start of the first projection step.
  • the second volume is the volume of first fluid F that the scraper 20 is able to move during the circulation step.
  • the second volume is determined experimentally by filling the circulation duct 15 with the first fluid F and by implementing the circulation step.
  • the second volume is, for example, greater than or equal to 80 percent (%) of the volume of the lumen of the circulation duct 15
  • the second volume is, for example, the volume of first fluid F contained in the circulation duct 15.
  • the second volume is the volume of the lumen of the circulation duct 15.
  • the circulation step is implemented after the first projection step.
  • valve 22 is open.
  • the injector 21 injects second fluid into the circulation duct 15 downstream of the scraper 20.
  • the second fluid then pushes the scraper 20, which moves upstream in the circulation duct.
  • the scraper 20 is withdrawn from the circulation duct 15.
  • the scraper 20 conforms to the scrapers 20 described in the first, second, third and fourth preceding examples, that is to say when a difference between the internal diameter Di of the circulation duct 15 and the first value De1 is greater or equal to 100 micrometers ( ⁇ m), the scraper 20 circulates easily even in the portions of the circulation duct 15 which are not rectilinear, in particular in the second portion 29, which is helical. The quantity of first fluid F recovered is then increased, since it is avoided that a section of the duct 15, which cannot be traversed by the scraper 20, is still filled with the first fluid F at the end of the circulation step. .
  • the difference between the internal diameter Di of the circulation duct 15 and the first value De1 is liable to vary, in particular to be strictly less than 100 ⁇ m, for example. example equal to zero, or even greater than or equal to 100 ⁇ m as is the case in the first example.
  • the fifth example of installation 10 is likely to include a scraper 20 and a holding system 55 in accordance with the scrapers 20 and the holding systems of the second, third and fourth examples of installation. 10 and previously described variants of these second, third and fourth examples.
  • the fifth example of installation 10 does not include a scraper 20.
  • the second fluid is then a liquid, for example a liquid solvent suitable for dissolving or diluting the first fluid F, or else water.
  • the injector 21 is configured to inject a predetermined volume of second fluid into the circuit 16.
  • the injector 21 is further configured to stop the injection when the injected volume is equal to a predetermined volume.
  • the injector 21 is further configured to inject a flow of gas into the circuit 16.
  • the injector 21 is configured to inject the predetermined volume of second fluid into the circuit 16, and then to inject the gas into the circuit 16. the circuit 16 to cause the movement of the second fluid in the circuit 16.
  • the gas is, for example, compressed air.
  • the gas has a third pressure value when the gas is injected into the circuit 16.
  • the third pressure value is less than or equal to 20 bar.
  • the fifth example of installation 10 is suitable for implementing a method comprising a step of injecting the second fluid into circuit 16.
  • the injector 21 continues the injection of the second fluid into the circuit 16.
  • Cylinder 75 is configured to contain the second fluid.
  • the cylinder 75 defines a cylindrical cavity suitable for receiving the second fluid.
  • the cylinder 75 extends along an axis Ac specific to the cylinder 75.
  • the cylinder 75 is likely to have a circular base, but also a polygonal base, or even a base having any shape in a plane perpendicular to the axis Ac of the cylinder 75.
  • the piston 80 is, for example, made of a metallic material.
  • the face of the piston 80 which delimits the chamber 100 is made of stainless steel.
  • this face is made of a polymer, or else covered with a layer of polymer or a layer of polytetrafluoroethylene (PTFE).
  • PTFE polytetrafluoroethylene
  • the piston 80 is movable in translation between a primary position and a secondary position relative to the cylinder 75 so as to vary the respective volumes of the chambers 95 and 100.
  • the piston 80 is movable along the axis Ac of the cylinder 75. .
  • Actuator 85 is configured to move piston 80 between its primary and secondary positions.
  • the actuator 85 comprises, for example, a motor and a rod suitable for transmitting a force from the motor to the piston 80 in order to move the piston 80.
  • the motor is, for example, an electric motor such as a torque motor, or even a brushless motor.
  • the chamber 100 contains second fluid and the actuator 85 moves the piston 80 in the direction of the secondary position.
  • the chamber 100 is filled with a second fluid.
  • the actuator 85 periodically determines a position of the piston 80 in the cylinder 75, in particular a distance traveled by the piston 80 along the axis of the cylinder 75 from the primary position. Determining the distance traveled is equivalent to determining the volume injected, since the volume injected is a bijective function of the distance traveled, i.e. a distance traveled corresponds to a single injected volume.
  • the predetermined position is, in particular, a position such that the displacement of the piston from the primary position to the secondary position decreases the volume of the chamber 100 by a volume value equal to the predetermined volume.
  • the actuator 85 continues to move the piston 80 to the secondary position.
  • the actuator 85 stops moving the piston 80.
  • the injector 21 is configured to close the valve 47 when the piston 80 reaches the predetermined position. It should be noted that other types of injectors 21 are likely to be used in the fifth example.
  • the injector 21 comprises a source of second fluid and a flowmeter.
  • the flowmeter is suitable for measuring values of the flow rate of the second fluid injected by the injector 21 into the circuit 16.
  • the flow is, for example, a volume flow.
  • the flow rate is a mass flow rate.
  • the injector 21 stops the injection when the total volume is equal to the predetermined volume. For example, injector 21 closes valves 47, 105, 110, 15 connecting injector 21 to circuit 16.
  • the fifth example of installation 10 is suitable for implementing a spraying process in which, during the circulation step, no scraper 20 is present in the duct 15.
  • the second fluid pushes the first fluid F in front of it as far as the projection member 13.
  • an injector 21 capable of stopping the injection of second fluid when the volume of second fluid injected is equal to a predetermined volume makes it possible to precisely control the quantity of second fluid used during the injection step.
  • this volume does not depend on the viscosity of the first fluid F (or on the mixture between the first fluid F and the second fluid) present in the circuit 16, unlike the methods of the state of the art in which a source of the second fluid is connected to the circuit 16 for a predetermined time, since the viscosity of the fluid (s) contained in the circuit depends, among other things, on the ratio between the first fluid F and the second fluid present in the circuit 16.
  • a piston 80 for injecting the second fluid into the circulation duct 15 makes it possible in particular to control more precisely the volume of second fluid injected, in particular when this fluid is a liquid such as a solvent, than is permitted.
  • the injectors 21 of the state of the art The prior art injectors which use pumps such as gear pumps have a flow rate which may vary as a function of the average viscosity. For example, gear pumps have internal leaks which are a function of this viscosity. As a result, the volume of liquid actually injected into the circulation pipe F by the injectors of the state of the art is not effectively controlled.
  • Estimating the volume of second fluid injected from the distance traveled by piston 80 is a method of accurately and simply estimating the amount of volume injected into a device other than cylinder 75, piston 80 and l. actuator 85 is required.
  • Injectors 21 estimating the volume of second fluid actually injected from the measured flow rate values also allow better control of the quantity of second fluid injected.
  • the injection of the second fluid with a pressure greater than or equal to the pressure of the gas makes it possible to use the gas to propel the second fluid, and therefore reduces the quantity of second fluid required.

Landscapes

  • Cleaning In General (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Catching Or Destruction (AREA)

Claims (9)

  1. Anlage (10) zum Sprühen eines Fluids (F), die einen Umlaufkreis (16) zum Zirkulieren des Fluids (F) umfasst, der einen zum Aufsprühen des Fluids (F) geeigneten Zerstäuber (13), eine Pumpe (12) und eine Fluidumlaufleitung (15) umfasst, wobei die Pumpe (12) geeignet ist, das Fluid (F) in die Umlaufleitung (15) einzuspritzen, und die Umlaufleitung (15) ausgebildet ist, das Fluid (F) von der Pumpe (12) zum Zerstäuber (13) zu leiten, wobei die Anlage (10) außerdem mindestens einen Injektor (21) umfasst, der ausgebildet ist, eine zum Fluid (F) unterschiedliche Flüssigkeit in den Umlaufkreis (16) einzuspritzen,
    wobei der Injektor (21) ausgebildet ist zum:
    • Vergleichen eines Gesamtvolumens der in das System eingespritzten Flüssigkeit mit einem vorbestimmten Volumen, und
    • Stoppen des Einspritzens, wenn das eingespritzte Flüssigkeitsvolumen gleich dem vorgegebenen Volumen ist,
    wobei die Anlage dadurch gekennzeichnet ist, dass ein Volumenstrom für die durch den Injektor (21) in den Umlaufkreis (16) eingespritzte Flüssigkeit definiert ist, wobei der Injektor (21) ausgebildet ist, mindestens einen Wert des Volumenstroms zu bestimmen und das eingespritzte Volumen aus dem oder den gemessenen Durchflusswerten zu schätzen.
  2. Anlage nach Anspruch 1, bei der der Injektor (21) einen zum Aufnehmen der Flüssigkeit geeigneten Zylinder (75), einen in dem Zylinder (75) aufgenommenen Kolben (80) und einen Stellantrieb (85), der geeignet ist, den Kolben (80) in dem Zylinder (75) von einer ersten Position in eine zweite Position zu verschieben, umfasst, wobei der Injektor (21) derart ausgebildet ist, dass die Verschiebung des Kolbens (75) in dem Zylinder (80) in Richtung seiner zweiten Position ein Einspritzen der Flüssigkeit in die Umlaufleitung (15) bewirkt.
  3. Anlage nach Anspruch 2, bei der der Injektor (21) geeignet ist, eine Position des Kolbens (80) im Zylinder (75) zu bestimmen und das Volumen der eingespritzten Flüssigkeit zumindest aus der bestimmten Position abzuschätzen.
  4. Anlage nach einem der Ansprüche 1 bis 3, bei der der Injektor (21) außerdem ausgebildet ist, in den Umlaufkreis (16) ein zum Antreiben der Flüssigkeit geeignetes Gas einzuspritzen, wobei der Injektor (21) ausgebildet ist, die Flüssigkeit mit einem ersten Druck einzuspritzen und das Gas mit einem zweiten Druck einzuspritzen, wobei der erste Druck größer als der oder gleich dem zweiten Druck ist.
  5. Anlage nach Anspruch 4, umfassend einen Drucksensor, der zur Messung des ersten Drucks geeignet ist.
  6. Anlage nach Anspruch 4 in Verbindung mit Anspruch 2 oder 3, bei der der Stellantrieb (85) einen Elektromotor umfasst, wobei der Stellantrieb geeignet ist, den ersten Druck aus mindestens einem Wert eines vom Elektromotor verbrauchten elektrischen Stroms abzuschätzen.
  7. Anlage nach einem der Ansprüche 1 bis 6, wobei für die Umlaufleitung (15) ein stromaufwärts und ein stromabwärts gelegener Bereich definiert sind, wobei das Fluid (F) von stromaufwärts zu stromabwärts umläuft, wenn das Fluid (F) durch die Umlaufleitung (15) von der Pumpe (12) zu dem Zerstäuber (13) geführt wird, wobei der Injektor (21) ausgebildet ist, die Flüssigkeit in ein stromaufwärts liegendes Ende (15A) der Umlaufleitung (15) einzuspritzen.
  8. Anlage nach einem der Ansprüche 1 bis 7, wobei der Umlaufkreislauf (16) eine Farbwechseleinheit (11) umfasst, die geeignet ist, die Pumpe (12) mit einer Mehrzahl von unterschiedlichen Fluiden (F) zu versorgen, wobei:
    • der Injektor (21) zum Einspritzen der Flüssigkeit in die Farbwechseleinheit (11) ausgebildet ist, und/oder
    • der Injektor (21) zum Einspritzen der Flüssigkeit in die Pumpe (12) ausgebildet ist, und/oder
    • der Injektor (21) zum Einspritzen der Flüssigkeit in den Zerstäuber (13) ausgebildet ist, wobei der Zerstäuber (13) insbesondere eine rotierende Schale umfasst und zum Leiten der Flüssigkeit in die rotierende Schale ausgebildet ist.
  9. Verfahren, das durchgeführt wird von einer Anlage (10) zum Sprühen eines Fluids (F), die einen Umlaufkreis (16) zum Zirkulieren des Fluids (F) umfasst, der einen zum Aufsprühen des Fluids (F) geeigneten Zerstäuber (13), eine Pumpe (12) und eine Fluidumlaufleitung (15) umfasst, wobei die Pumpe (12) geeignet ist, das Fluid (F) in die Umlaufleitung (15) einzuspritzen, und die Umlaufleitung (15) ausgebildet ist, das Fluid (F) von der Pumpe (12) zum Zerstäuber (13) zu leiten, wobei die Anlage (10) außerdem mindestens einen Injektor (21) umfasst, wobei das Verfahren einen Schritt des Einspritzens einer zum Fluid (F) unterschiedliche Flüssigkeit in den Umlaufkreis (16) durch den Injektor (21) umfasst,
    wobei der Schritt des Einspritzens umfasst:
    • Vergleichen eines Flüssigkeitsvolumens, das seit dem Beginn des Einspritzschritts in den Umlaufkreis eingespritzt wurde, mit einem vorbestimmten Volumen, und
    • Stoppen des Einspritzens, wenn das eingespritzte Flüssigkeitsvolumen gleich dem vorgegebenen Volumen ist,
    wobei das Verfahren dadurch gekennzeichnet ist, dass ein Volumenstrom für die durch den Injektor (21) in den Umlaufkreis (16) eingespritzte Flüssigkeit definiert wird, wobei der Schritt des Vergleichens das Bestimmen mindestens eines Wertes des Volumenstroms durch den Injektor (21) und das Schätzen des eingespritzten Volumens aus dem oder den gemessenen Durchflusswerten durch den Injektor umfasst.
EP19203990.7A 2018-10-19 2019-10-18 Flüssigkeitsspritzanlage und entsprechendes verfahren Active EP3639929B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1859673A FR3087364B1 (fr) 2018-10-19 2018-10-19 Installation de projection de fluide et procede associe

Publications (2)

Publication Number Publication Date
EP3639929A1 EP3639929A1 (de) 2020-04-22
EP3639929B1 true EP3639929B1 (de) 2021-05-19

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US (1) US11207704B2 (de)
EP (1) EP3639929B1 (de)
JP (1) JP7488038B2 (de)
KR (1) KR20200044700A (de)
CN (1) CN111203350B (de)
ES (1) ES2875947T3 (de)
FR (1) FR3087364B1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3098419B1 (fr) 2019-07-12 2021-07-23 Exel Ind Installation de projection de fluide
WO2023078526A1 (en) * 2021-11-02 2023-05-11 Abb Schweiz Ag Supply device for supplying coating medium, coating medium apparatus, system and method of supplying coating medium
CN114607035B (zh) * 2022-03-30 2023-09-26 安徽北润建设工程有限公司 一种水利工程用管道清淤设备及使用方法

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CN111203350B (zh) 2023-04-25
EP3639929A1 (de) 2020-04-22
JP7488038B2 (ja) 2024-05-21
FR3087364B1 (fr) 2021-12-03
KR20200044700A (ko) 2020-04-29
JP2020066003A (ja) 2020-04-30
FR3087364A1 (fr) 2020-04-24
ES2875947T3 (es) 2021-11-11
CN111203350A (zh) 2020-05-29
US11207704B2 (en) 2021-12-28
US20200122177A1 (en) 2020-04-23

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