EP3552716B1 - Dispositif de transport destiné au transport de la poudre de revêtement, centre d'alimentation en poudre pourvu d'appareil de transport et procédé de nettoyage du centre d'alimentation en poudre - Google Patents

Dispositif de transport destiné au transport de la poudre de revêtement, centre d'alimentation en poudre pourvu d'appareil de transport et procédé de nettoyage du centre d'alimentation en poudre Download PDF

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Publication number
EP3552716B1
EP3552716B1 EP18167085.2A EP18167085A EP3552716B1 EP 3552716 B1 EP3552716 B1 EP 3552716B1 EP 18167085 A EP18167085 A EP 18167085A EP 3552716 B1 EP3552716 B1 EP 3552716B1
Authority
EP
European Patent Office
Prior art keywords
powder
container
cleaning
case
storage container
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
EP18167085.2A
Other languages
German (de)
English (en)
Other versions
EP3552716A1 (fr
Inventor
Gilbert Lutz
René Schmid
Rolf Mazenauer
Roman Schmid
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.)
Wagner International AG
Original Assignee
Wagner International AG
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 Wagner International AG filed Critical Wagner International AG
Priority to PL18167085.2T priority Critical patent/PL3552716T3/pl
Priority to EP18167085.2A priority patent/EP3552716B1/fr
Priority to US16/377,119 priority patent/US11065632B2/en
Priority to CN201910288206.1A priority patent/CN110369174A/zh
Publication of EP3552716A1 publication Critical patent/EP3552716A1/fr
Application granted granted Critical
Publication of EP3552716B1 publication Critical patent/EP3552716B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying 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
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1454—Arrangements for supplying particulate material comprising means for supplying collected oversprayed particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying 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
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1463—Arrangements for supplying particulate material the means for supplying particulate material comprising a gas inlet for pressurising or avoiding depressurisation of a powder 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
    • B05B12/02—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
    • 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
    • B05B14/10—Arrangements for collecting, re-using or eliminating excess spraying material the excess material being particulate
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying 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
    • B05B7/1404—Arrangements for supplying particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying 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
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1459—Arrangements for supplying particulate material comprising a chamber, inlet and outlet valves upstream and downstream the chamber and means for alternately sucking particulate material into and removing particulate material from the chamber through the valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying 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
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1468—Arrangements for supplying particulate material the means for supplying particulate material comprising a recirculation loop
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying 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
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1472—Powder extracted from a powder container in a direction substantially opposite to gravity by a suction device dipped into the powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
    • B05C19/008—Accessories or implements for use in connection with applying particulate materials to surfaces; not provided elsewhere in B05C19/00

Definitions

  • the invention relates to a conveying device for conveying coating powder.
  • the invention also relates to a powder center with such a conveying device and a method for cleaning the powder center and a method for cleaning the powder center.
  • the powder When electrostatically coating workpieces with coating powder, or in short powder, the powder is sprayed onto the workpiece to be coated using one or more powder applicators.
  • the workpiece coated with powder is then heated so that the powder melts. After the workpiece has cooled, the powder forms a hard, closed coating on the workpiece.
  • the workpieces to be coated are usually located within a powder coating booth, which is also referred to below as a booth or coating booth.
  • the powder applicators are supplied with coating powder via one or more powder conveyors, which can be located in a powder center.
  • a powder conveying device for conveying coating powder to a powder applicator.
  • the powder conveying device has a powder conveyor which is connected to a work container arranged underneath and serves to convey coating powder from a powder storage container into the work container.
  • powder is initially added located in the work container, removed from the work container.
  • a powder line protruding into the work container and a valve are provided.
  • the valve is open, the remaining powder can be removed from the work container.
  • a possible return container which is intended to hold the residual powder removed from the work container, must disadvantageously be placed directly below the work container. This means that the work container has to be placed very high up, which can lead to space problems in confined spaces.
  • powder dust is created, which pollutes the environment and which then has to be cleaned regularly by hand. In addition, the resulting powder dust can be accidentally inhaled by operating personnel.
  • a powder coating system is known.
  • the system includes a powder container with a drain valve for residual powder.
  • This system also has the disadvantages described above.
  • One object of the invention is to provide a conveyor device for conveying coating powder, a powder center with the conveyor device and a method for cleaning the powder center, in which the degree of automation in cleaning is increased even further is increased.
  • the immission of powder dust can be further reduced with the conveying device according to the invention for conveying coating powder. This minimizes the risk of operating personnel inhaling powder dust while cleaning.
  • a further advantage of the conveying device according to the invention for conveying coating powder is that the powder storage container or the working container, which is part of the conveying device, no longer has to be lifted by the operating personnel and transported to another location.
  • the quality of the cleaning can be maintained at a particularly high level and the cleaning can be carried out in a process-reliable manner.
  • the automated cleaning provided for the conveyor device according to the invention can be carried out more quickly than if the conveyor device were cleaned by the operating personnel.
  • a further advantage of the invention is that the conveying device and the powder return container, which is intended to hold the residual powder removed from the working container, do not have to be directly next to each other.
  • the distance between the conveyor device and the powder collection container can be up to 20 or 30 m.
  • the powder outlet channel is connected to a first powder conveyor in order to convey powder from the powder storage container back to a powder container.
  • the powder storage container has a container base and a number of further powder outlets in the area of the container base.
  • a powder conveying device is provided to convey powder through one of the further powder outlets from the powder storage container to a powder applicator.
  • the powder center according to the invention with the conveying device described above has a cleaning unit for cleaning the powder storage container and the container lid.
  • the cleaning unit can be moved by means of a manipulator from a parking position next to the powder storage container into a cleaning position in the powder storage container.
  • a control is provided with which the cleaning unit and the manipulator can be controlled.
  • the object is also achieved by a method for cleaning the powder center described above, the method comprising the features specified in claim 15.
  • the procedure for cleaning the powder center includes the following steps.
  • the first powder conveyor is used to remove the remaining powder in the powder storage container promoted out.
  • the powder storage container and the container lid are then cleaned using the cleaning unit.
  • a third powder conveyor is provided in order to convey powder from the powder container into the powder storage container. This allows the level of automation to be increased even further.
  • a valve for purging air is provided, which is connected to the powder outlet channel via a purging air inlet and is intended to blow purging air into the powder outlet channel and/or to the first powder conveyor.
  • a fluidizing element is provided in the powder outlet channel. This allows the transport of the remaining coating powder from the work container to be further improved.
  • the fluidizing element can be annular. Such a fluidizing element can be produced simply and inexpensively. Another advantage is that this fluidizing element can be installed in such a way that no dead space is created and therefore no powder can be deposited there. In addition, such a fluidizing element easy to clean. The air for fluidization can also be distributed evenly over the circumference of the powder channel with such a fluidizing element.
  • the fluidizing element is made of a microporous material. This means that air can pass through the fluidizing element, but not the coating powder.
  • the powder storage container has a circular cross section. This has the advantage that the powder storage container has fewer corners and edges in which powder can accumulate. The powder storage container is therefore easier to clean.
  • the powder storage container has a bottom that slopes downwards towards the center of the powder storage container. Gravity can be used to help collect and transport the remaining powder.
  • the mouth of the powder outlet channel is located in the middle of the sloping floor. This allows the removal of residual powder to be further improved.
  • the powder outlet channel is funnel-shaped. This can also further improve the removal of residual powder.
  • the first powder conveyor in the conveying device can have a powder container with a powder inlet and a powder outlet, as well as a powder inlet valve and a powder outlet valve.
  • the powder inlet is connected to the powder inlet valve and the powder outlet is connected to the powder outlet valve.
  • the powder container can be placed under negative pressure.
  • the third powder conveyor is constructed like the first powder conveyor.
  • a container lid is provided on the powder storage container, which is at least partially removable.
  • FIG. 1 A first possible embodiment of the conveying device according to the invention for conveying coating powder is shown. Some components of the conveyor device are shown in longitudinal section and some symbolically as a block diagram.
  • the conveying device includes a powder storage container 3, which has a Container lid 23 can be closed.
  • the powder storage container 3 and the container lid 23 together form a working container 3, 23. If necessary, the container lid 23 can have a side wall 23.2.
  • the container lid 23 then has the shape of an upside down pot.
  • a powder conveyor 4 is located above the working container 3, 23 in order to convey powder from a powder container 111 into the powder storage container 3 or into the working container 3, 23.
  • the powder storage container 3 can have a circular cross section. Inside the powder storage container 3 can, as in Figure 1 shown, a sieve 24 may be arranged.
  • the sieve 24 is preferably designed as an ultrasonic sieve.
  • a fluidizing base 25.1 can be located in the lower area of the powder storage container 3.
  • the powder storage container 3 is closed at the bottom with a bottom 25.
  • the fluidizing base 25.1 is arranged directly above the base 25 and slopes obliquely towards the center of the powder storage container 3 or towards a powder outlet 25.2.
  • the powder outlet 25.2 serves as an outlet for residual powder and forms the inlet mouth of a powder outlet channel 203.
  • This is preferably funnel-shaped and has a fluidizing element 201.
  • the fluidizing element 201 can be annular and made of a microporous material.
  • the fluidizing element 201 can be tubular, for example.
  • the inlet opening 25.2 of the powder outlet channel 203 is preferably located in the middle of the sloping fluidizing base 25.1.
  • a vibrator 220 is provided, which can be located, for example, below the powder storage container 3 (see Figure 1 ). With the help of the shaking movements generated by the shaker 220, the powder-air mixture in the powder storage container 3 can be fluidized even more evenly. In addition, the powder-air mixture can flow out of the powder outlet channel 203 even more optimally.
  • the powder outlet channel 203 has a purge air inlet 212 at the bottom, via which it is connected to a valve for purge air S12.
  • the purge air valve S12 in turn is connected to a compressed air source via connection 3.3.
  • the purge air valve S12 can be used for purging in two different ways. On the one hand, it can blow flushing air into the powder outlet channel 203 via the flushing air inlet 212 for cleaning purposes. For this purpose, the material valve M11 is opened, the inlet valve 49.2 and possibly also the outlet valve 49.3 of the powder conveyor 49 are closed. The suction of the cleaning device 28 is switched on. When the purge air valve S12 is now opened, the compressed air flows from bottom to top through the powder channel 203 and cleans it. On the other hand, the purge air valve S12 can also be used to blow purge air via the line 96 and the powder conveyor 49 in the direction of the suction opening 162. In addition the material valve M11 is closed. The inlet valve 49.2 and the outlet valve 49.3 of the powder conveyor 49 are opened. The suction at the suction opening 162 is switched on.
  • connection 3.4 On the outlet side, the powder channel 203 is connected to connection 3.4 via a valve M11.
  • a line 96 can be connected to the connection 3.4, via which the residual powder that is still in the powder storage container 3 can be transported back to a powder storage container 110 using a powder conveyor 49.
  • the powder storage container 110 can be part of a fresh powder station 3 (see Figures 13 - 16 ).
  • the line 96 can be designed as a hose.
  • Figure 2 shows a possible embodiment of the powder conveyor 49 for conveying coating powder, partly in longitudinal section.
  • the powder that can be conveyed with the powder conveyor 49 can be, for example, fresh powder or recycled powder.
  • the powder conveyor 49 has a powder inlet valve 310 with a powder inlet 310.1 on the input side.
  • powder inlet valve 310 When the powder inlet valve 310 is open, powder can be sucked or pumped into a container 301 adjoining the powder inlet valve 310.
  • the container 301 is also referred to below as an intermediate container. It has a container housing or, in short, housing with an upper housing part 302, a housing middle part 303 and a lower housing part 304.
  • the powder inlet valve 310 can be designed as a squeeze. To open the powder inlet valve 310, the Control port 313.1 of valve 313 depressurized.
  • the valve 313 is preferably designed as a quick vent valve. This means that if necessary, the pressure in the powder inlet valve 311 can be reduced more quickly and its valve opening time can be shortened.
  • the powder conveyor 49 has a powder outlet valve 320 on the output side with a powder inlet 320.1 and a powder outlet 320.2.
  • the powder outlet valve 320 can be designed as a squeeze. In order to open the powder outlet valve 320, the control connection 323.1 of the valve 323 is depressurized. Like the valve 313, the valve 323 can also be designed as a quick vent valve. This means that the pressure in the powder outlet valve 320 can be reduced more quickly if necessary.
  • the upper housing part 302 has a funnel-shaped inside 302.1.
  • the funnel-shaped contour helps to channel the powder flowing into the intermediate container 301 without it sticking to the inner wall of the upper housing part 302.
  • the funnel-shaped inside 302.1 is adjoined by a paragraph 302.2, which is also referred to below as the upper paragraph.
  • the paragraph 302.2 is an annular surface which preferably runs slightly obliquely relative to the horizontal.
  • the paragraph 302.2 is adjoined by an inner wall 302.3, which preferably deviates slightly from the vertical.
  • the side wall 302.3 forms a guide that tapers towards the top and thus acts as a centering aid for the tube 305
  • Side wall 302.3 is followed by a wide paragraph below and then another side wall 302.5.
  • the lower end of the upper housing part 302 is designed as a round connector 302.7.
  • the housing middle part 303 is plugged onto this connector 302.7, which carries a seal. With the help of several screws 309, the middle part of the housing 303 can be screwed to the upper part of the housing 302.
  • the lower end of the middle housing part 303 is located in an annular receptacle of the lower housing part 304.
  • the lower housing part 304 like the upper housing part 302, has a funnel-shaped inside 304.1.
  • the funnel-shaped contour helps to channel the powder located in the intermediate container 301 towards the outlet 320.1 without it sticking to the inner wall 304.1 of the lower housing part 304.
  • a paragraph 304.2 adjoins the funnel-shaped inside 304.1.
  • the paragraph 304.2 is also referred to below as the lower paragraph and is an annular surface that is slightly slanted compared to the horizontal.
  • the side wall 304.3 forms a guide that tapers downwards and thus acts as a centering aid for the tube 305.
  • Another paragraph adjoins the side wall 304.3 above and to it again another side wall 304.5.
  • the side wall 304.5 like the side wall 302.5, is spaced from the outside 305.9 of the tube 305, so that between the side walls 302.5, 304.5 and the outside of the tube 305 a free space 306 is created. In the area of the free space 306, the air can pass through the semi-permeable tube 305, but not the powder.
  • the upper end of the lower housing part 304 is preferably designed as a round socket 304.7 and forms a receptacle for the lower section of the middle housing part 303.
  • the lower section of the middle housing part 303 is in the receptacle and can be screwed and/or glued to it. This creates a secure and tight connection between the middle housing part 303 and the lower housing part 304 in a simple manner.
  • grounding can be provided on the powder conveyor.
  • the ground cable 314 may, for example, be electrically connected to the housing middle part 303 of the powder conveyor 49.
  • the powder conveyor 4, which serves to supply the working container 3, 23, can be identical in construction to the powder conveyor 49.
  • the operation of the powder conveyor 4 is explained further below. It is assumed that the intermediate container 301 is initially free of powder. In a first step, the valves 310 and 320 are closed so that neither powder gets into the intermediate container 301 nor is powder transported out of the intermediate container 301. Now the vacuum valve 327 is opened to generate a negative pressure in the intermediate container 301. The air is sucked out of the intermediate container 301 through the air-permeable pores of the tube 305. As soon as the powder inlet valve 310 is opened, powder is fed into the intermediate container 301 respectively the powder chamber 307 is sucked.
  • the powder inlet valve 310 can be opened at any time, i.e. shortly before the opening of the vacuum valve 327, simultaneously with the vacuum valve 327 or even after the vacuum valve 327 has been opened.
  • the vacuum valve 327 and the powder inlet valve 310 are closed again.
  • Such a suction process can take, for example, 6 seconds.
  • the outlet valve 320 is then opened so that the powder can flow out of the intermediate container 301. This can be done using gravity. In order to support the powder transport from the intermediate container 301, compressed air can be blown into the intermediate container 301 via the connection 308 and the opening 308.1.
  • valve 328 is opened.
  • the compressed air first enters the room 306 via the connection 308 and the opening 308.1. It then flows through the semi-permeable tube 305 into the powder chamber 307.
  • the compressed air helps to clean the inner wall of the tube 305 with each conveying cycle.
  • connection 308 can be as in Figure 2 shown, are located in the middle part of the housing 303.
  • the connection 308 is connected to the space 306 via the opening 308.1, which is designed as a through hole in the middle part of the housing 303.
  • the powder conveyor 4 can, as in Figure 1 and 3 shown, be connected to the work container 3, 23 in order to supply it with powder. Since the working container 3, 23 is permanently under pressure during conveying operation, it is advantageous if the pressure in the intermediate container 301 is greater or at least as great as the pressure in the working container 3, 23.
  • a pressure control valve 340 can be used to adjust the pressure in the intermediate container 301. As soon as the powder has flowed out of the intermediate container 301, the outlet valve 320 and the valve 328 are closed again. The intermediate container 301 can then be filled with powder again in the manner described above.
  • the powder conveyor 4 can have a flange 324.
  • the flange 324 and the screws 325 serve to be able to connect the powder conveyor 4 to another component.
  • the powder conveyor 4 described above can be used at various points in a powder coating system.
  • Figure 3 shows a possible embodiment of a powder coating system with three such powder conveyors in a schematic block diagram. They are designated as powder conveyors 4, 5 and 49 in the powder coating system.
  • powder conveyors 4, 5 and 49 in the powder coating system.
  • Its intermediate container is in Figure 1 with the reference number 49.1, its inlet valve marked 49.2 and its outlet valve marked 49.3.
  • the powder center 1 which is also referred to as a powder supply device, powder center or integrated powder management system, includes the powder storage container 3, which is used to store the coating powder.
  • the powder center 1 includes a powder conveying device with which the powder is conveyed out of the powder storage container 3 and transported to a powder applicator 80.
  • the powder conveying device is integrated into the powder storage container 3 and will be explained in more detail later.
  • the powder applicator 80 (see Figure 3 ) can be designed as a manual or automatic powder spraying device and has a spray nozzle or a rotary atomizer at its outlet directed towards the workpiece 65.
  • the powder center 1 is constructed as a module. This allows the powder center 1 to be transported quickly and easily as a compact unit.
  • the individual components of the powder center 1 are attached to frame profiles 2, which can be made of aluminum or steel, for example.
  • the frame profiles 2 form the outer boundary of the powder center 1. If necessary, the powder center 1 can have a base 7.
  • the powder storage container 3 of the powder center 1 can be arranged on a base 6, for example. Like for example in Figure 9 shown, the powder storage container 3 can be closed with the powder container lid 23 during conveying operation. At the in the Figures 4 to 12 In the embodiment shown, the powder container lid 23 has the shape of an upside-down pot.
  • the powder container lid can be opened using pneumatic locks 18 23 must be sealed tightly with the powder storage container 3.
  • the powder storage container 3 has seals and locking receptacles 3.1, into which correspondingly designed counterparts of the pneumatic lock 18 can engage.
  • the pneumatic lock 18 can be equipped, for example, with a cylinder, a piston and a piston rod.
  • the piston and thus also the piston rod are pushed upwards.
  • the claw located at the lower end of the piston rod engages in the locking receptacle 3.1 and causes the powder container lid 23 to be pressed onto the powder storage container 3.
  • three such locks 18 are present (for example in the Figures 6 and 7 shown). The number of locks 18 and their structure can easily be adapted to the respective needs.
  • the sieve 24 can be designed as an ultrasonic sieve.
  • the ultrasonic transducer 24.1 of the sieve 24 is preferably located outside the powder storage container 3. If the powder container lid 23 is removed, the sieve 24 is accessible and can be removed. So that this can happen automatically, the ultrasonic sieve 24 is attached to a pivoting mechanism 16 via a support arm 22.
  • the sieve 24 can be moved out of the working position using the pivoting mechanism 16 (see Figure 6 ) are pivoted out and brought into a cleaning position in a cleaning station 27 (see Figure 12 ).
  • the cleaning station 27 is also referred to below as a screen cleaning device or screen cleaning station.
  • the cleaning arm 20 has a plurality of cleaning nozzles 20.1 which are arranged on the top of the cleaning arm 20.
  • the cleaning station 27 also includes a lid 15, which can be opened and closed, for example with the help of a pneumatic cylinder 17.
  • the lid 15 is pivoted about a hinge 21.
  • a curved double arrow indicates the pivoting movement.
  • the lid 15 On its underside, the lid 15 carries a cleaning arm 19, which is also equipped with a large number of cleaning nozzles 19.1.
  • the cleaning nozzles 19.1 are preferably located on the underside of the cleaning arm 19. They are aligned so that they blow compressed air downwards onto the ultrasonic sieve 24 located under the cleaning arm 19 during the cleaning operation.
  • the upper cleaning arm 19 is rotatably mounted on the cover 15 with a bearing 50.
  • the lower cleaning arm 20 is rotatably mounted on the cleaning container 14 via a bearing 51.
  • the two bearings 50 and 51 can also be designed as air motors.
  • the direction of rotation of the upper cleaning arm 19 and the direction of rotation of the lower cleaning arm 20 are each marked with an arrow.
  • the direction of rotation of the cleaning arm results from the offset arrangement of the cleaning nozzles and the recoil that occurs when compressed air flows out through the nozzles.
  • the ultrasonic sieve 24 is located between the lower cleaning arm 20 and the upper cleaning arm 19.
  • the cleaning arm 19 can be at both ends (as in Figure 8 shown) must be angled so that it is horizontal Legs and two legs pointing diagonally upwards.
  • the compressed air nozzles 19.1 can be located both on the horizontal leg and on the legs directed obliquely upwards.
  • the cleaning arm 19 can be designed as a tube in order to guide the compressed air inside the tube to the compressed air nozzles 19.1. The same applies to the lower cleaning arm 20, even if in Figure 8 the ends of the lower cleaning arm 20 are not angled.
  • the container 14 for receiving the sieve 24 there is a lower container section 14.2 with an outlet 14.1.
  • the powder-air mixture located in the cleaning station 27 can be sucked out via the outlet 14.1.
  • the outlet 14.1 is connected to an inlet opening 13.2 of a suction pipe 13 via a hose (not shown in the figures).
  • the powder-air mixture can be sucked into a secondary filter 100 via the suction pipe 13 and a suction line 91.
  • the powder inlet of the working container 3, 23 is preferably located in its upper area. It can be arranged, for example, in the powder container lid 23 of the working container 3, 23.
  • the working container 3, 23 can also have several powder inlets.
  • the powder inlet 23.1 is connected to the powder outlet 4.2 of the intermediate container 301 via the powder valve M21, which is designed, for example, as a pneumatically controlled squeezer.
  • a second powder conveyor 5 can be arranged above the working container 3, 23. Its powder outlet also opens into the working container 3, 23.
  • the second powder conveyor 5 can be constructed like the first powder conveyor 4 (see Figure 2 ).
  • the powder conveying device integrated into the powder storage container 3 is explained in more detail below.
  • the powder conveying device can, as in the European patent application EP 3 238 832 A1 described, trained.
  • the working container 3, 23 is designed and operable in such a way that it can be pressurized. With the help of the powder conveyor 4, powder can be conveyed out of the fresh powder station 30 and transported into the work container 3, 23.
  • the working container 3, 23 has in the area of the container base 25 a fluidizing insert 25.1 for fluidizing the powder and a series of powder outlets 3.2. It can be provided that a powder outlet valve G1 - G36 is connected to each of the powder outlets 3.2.
  • a powder line 81 is connected to each of the powder outlet valves G1 - G36.
  • Each of the powder lines 81 also has an inlet for transport air on the input side, i.e. near the respective powder outlet valve G1 - G36.
  • On the output side, each of the powder lines 81 is preferably connected to one of the powder applicators 80 via a coupling 130.
  • the amount of powder to be conveyed is controlled by repeatedly opening and closing the respective powder outlet valve G1 - G36 using a controller 70.
  • a controller 70 In order to avoid repetitions, reference is made to the above-mentioned patent application EP 3 238 832 A1 referred.
  • the coupling 130 has a first group of connections 131 and a second group of connections 132.
  • the control 70 can be used to set which connection of the first group 131 is connected to which connection of the second group 132.
  • One of the powder lines 81 can be connected on the output side to a connection of the first group 131.
  • a powder line can be connected to each connection of the second group 132, which on the other hand is connected to one of the powder applicators 80.
  • 36 powder outlet valves G1 - G36 are used. However, more or fewer powder outlet valves can also be used. The number of powder outlet valves used depends on the number of powder applicators 80 used.
  • a powder injector that works according to the Venturi principle or a powder pump for dense phase conveying can also be provided.
  • a powder pump for dense phase conveying a hose pump or a powder injector can also be provided. The same applies to the powder conveyor 5.
  • the powder storage container 3 and its powder container lid 23 as well as the two powder conveyors 4 and 5 are attached to a vertical linear axis 12, which is also referred to as a linear lifting device, and can therefore be moved up and down.
  • the drive 12.1 of the linear axis 12 can be located at the top of the linear axis 12.
  • the vertical double arrow in Figure 9 indicates its direction of movement.
  • the powder center 1 also includes a container cleaning unit 28 or, in short, cleaning unit, which includes a cleaning container 10, an upper cleaning arm 11 and a lower cleaning arm 26.
  • the upper cleaning arm 11 and the lower cleaning arm 26 are rotatably mounted in the cleaning container 10 and each have a plurality of cleaning nozzles 11.1 and 26.1 operated with compressed air.
  • the cleaning container 10 is attached to a linear lifting device 9 and can be moved vertically up and down (in the y direction) with this.
  • the vertical double arrow in Figure 9 indicates its direction of movement.
  • the drive 9.1 of the linear lifting device 9 can be located at the top of the linear lifting device 9.
  • the linear lifting device 9 in turn is attached to a horizontally aligned linear drive 8 (also called a linear axis) and can be moved back and forth horizontally (in the x direction) with this.
  • the drive 8.1 of the linear axis 8 can be arranged laterally on the linear axis 8 be. With the linear axis 8 it is possible to position the container cleaning unit 28 laterally next to the working container 3, 23 during conveying operation (see Figures 4 to 7 ).
  • the container lid 23 is first moved upwards; Then the container cleaning unit 28 can be positioned with the help of the two linear drives 8 and 9 in such a way that the cleaning container 10 is first brought over the powder storage container 3 and then lowered, to such an extent that the cleaning arm 26 has a defined distance from the bottom 25 of the powder storage container 3 having.
  • the cleaning arm 26 protruding from the bottom of the cleaning container 10 is then located inside the powder storage container 3 and is used to clean the inner wall and the bottom 25 of the powder storage container 3.
  • the powder container lid 23 can be lowered to such an extent that the inner surfaces of the powder container lid 23 can be blown off and thus cleaned with the cleaning arm 11 protruding from the top of the cleaning container 10.
  • the cleaning arm 11 protrudes into the interior of the powder container lid 23.
  • a possible embodiment of the fresh powder station 30 is in the Figures 13 to 16 shown in different views.
  • the fresh powder station 30 can, for example, be designed as an independent module.
  • the station comprises a first footprint 31 and a second footprint 32, each of which contains a powder box 110, 111 (see Figure 3 ) be able to record.
  • the two storage areas 31 and 32 are preferably arranged at an angle so that the powder moves diagonally downwards into a corner in the powder box with the support of gravity. This means that the powder box can be emptied completely or almost completely using a suction lance 33 without much effort.
  • the suction lance 33 is, as in the Figures 15 and 16 shown, can be moved horizontally using a linear drive 44, so that it can be used both for a powder box arranged on the first footprint 31 and for a powder box arranged on the second footprint 32.
  • the fresh powder station 30 has an additional linear drive 38 in order to be able to move the suction lance 33 vertically.
  • the shaker 54 serves to set the powder in the box 110 in motion so that it is better distributed and flows towards the suction lance 33.
  • the filling level in the box 110 can be determined via the scales 46, and if the filling level falls below a certain level, a change of the powder boxes can be initiated.
  • the measurement signal generated by the scale 46 can be used to determine whether there is still enough space in the box 110 when powder is to be conveyed via line 96 from the powder center 1 back to the powder station 30.
  • the fresh powder station 30 additionally has a cleaning station 52, which is equipped with a scraper ring and/or compressed air nozzles and/or a suction system. This means that the outside of the suction lance 33 can be freed from powder adhering to it during the up and down movement.
  • air nozzles 57 can be attached to the cleaning station 53 in order to clean the lower area of the suction lance 33. If the suction lance 33 has a fluidizing crown to fluidize the powder in the suction area, this can also be cleaned with it.
  • a BigBag 120 with a pump 123 can also be provided.
  • the powder can be pumped from the pump 123 directly to the powder conveyor 4 via a powder line 126.
  • the BigBag 120 or 121 is also known as a Flexible Intermediate Bulk Container or FIBC for short. It usually contains larger amounts of powder than the powder box 110 and the powder box 111. The BigBag 120/121 is also usually further away from the powder conveyor 4 than the powder box 110 or 111. So The BigBag 120/121 can be at a distance of, for example, 30m from the powder conveyor 4, whereas the powder box 110 or 111 is, for example, 5m away from the powder conveyor 4.
  • the fresh powder station 30 can have several compressed air control valves 39 and 40 and control buttons 41 and 42.
  • the compressed air control valve 39 can be provided for adjusting the fluid air of the fluid base of the powder container 150.
  • the compressed air control valve 40 is used to adjust the fluid air at the fluidizing crown of the suction lance 33.
  • the position of the exhaust air flap can be controlled using the adjusting button 41.
  • a confirmation signal can be transmitted to the controller via the control button 42.
  • the fresh powder station 30 can have a suction 37 with a suction opening 37.1 in order to be able to suction excess powder from the interior of the fresh powder station 30.
  • the fresh powder station 30 can also have a flexible suction hose that can be used for manual cleaning if necessary.
  • the fresh powder station 30 has a pivoting mechanism 45 for the powder conveyor 49.
  • the pivoting mechanism 45 has a drive, which can be designed, for example, as a pneumatic drive, and a pivot arm 45.1. With the help of the pivoting mechanism 45, the powder conveyor 49 can be moved out of the conveying position (see Figure 15 ) be brought into a cleaning position. In the cleaning position, the powder conveyor 49 projects into the interior of the fresh powder station 30.
  • air nozzles 56 can be provided, to clean the lower portion of the powder conveyor 49 when it is pivoted from the conveying position to the cleaning position or from the cleaning position to the conveying position.
  • the pneumatic drive can include two pneumatically driven cylinders.
  • the powder conveyor 49 can thus be brought into a cleaning position, a first conveying position and a second conveying position. To move the powder conveyor 49 into the cleaning position (see Fig. 15 ), cylinder 1 and cylinder 2 are retracted. In the first conveying position, the powder conveyor 49 is located above the footprint 31. For this purpose, cylinder 1 is retracted and cylinder 2 is extended. In the second conveying position, the powder conveyor 49 is above the footprint 32; cylinders 1 and 2 are extended. In the first conveying position, powder can be conveyed back into the powder box 110 and in the second conveying position, powder can be conveyed back into the powder box 111.
  • the suction lance 33 can be brought into three different positions with the linear axis 38 and the linear drive 44: In the cleaning position (see Fig. 13 ), the suction lance 33 is located in the cleaning station 53. In the first conveying position, the suction lance 33 is above the footprint 31 and in the second conveying position above the footprint 32.
  • the fresh powder station 30 can also be equipped with its own control 43.
  • this control 43 for example, the suction lance 33, which Cleaning station 52 for the suction lance 33, the linear axis 38, the linear drive 44, the pivoting mechanism 45 and the blowing nozzles 56 and 57 are controlled.
  • Powder conveyor 49 shown is advantageously positioned directly above the powder box 110 or 111 into which it is intended to convey powder back. Since it uses gravity, the powder falls into the powder box located under the powder conveyor 49 after the outlet valve 49.2 of the powder conveyor 49 is opened.
  • the powder conveyor 49 used to return the powder can also be designed differently.
  • it can be designed as a powder pump. Since gravity is not used in such a powder pump, it can be arranged in different locations. For example, it can also be at the same height as the powder box 110.
  • two covers 35 and 36 can be provided, which can be opened manually. This means that the staff also has access to the interior of the fresh powder station 30 from above.
  • the fresh powder station 30 can also be equipped with side walls 34 and a rear wall 48.
  • FIG. 3 A possible embodiment of an entire system for powder coating workpieces 65 is shown in Figure 3 shown in simplified form as a block diagram.
  • the entire system can be controlled via a central control 70.
  • the controller 70 can be connected to various components of the entire system via corresponding control lines (not shown in the figures) and provided to control the powder coating booth 60 including powder applicators 80, the fresh powder station 30, the powder center 1, the powder recovery 90 and/or the post-filter 100 to control.
  • the fresh powder station 30 can have a separate control 43. The same applies to all other components of the entire system for coating workpieces with powder.
  • the excess powder which is also referred to as overspray, must be removed from the cabin 60 again. On the one hand, this is necessary because the environment outside the cabin must be kept free of powder dust. On the other hand, the risk of explosion increases if a certain powder concentration is exceeded due to the cloud of powder dust floating in the cabin. This must be avoided.
  • the overspray resulting from the coating is sucked out of the cabin 60 as a powder-air mixture together with the air in the cabin 60 and fed to a powder recovery device 90 via a residual powder pipeline 92.
  • the powder recovery device 90 can be designed, for example, as a cyclone.
  • the powder recovered there can be used if necessary be fed back to the powder center 1 via a powder line 94.
  • the powder-air mixture can be fed from the cyclone to the after-filter 100 via a suction line 93.
  • the powder-air mixture in the residual powder pipeline 92 is also referred to as the residual powder air flow.
  • the cabin 60 has, for example, a suction slot. It connects the interior of the cabin 60 with the residual powder pipeline 92. Excess powder is sucked out of the cabin interior as a powder-air mixture via the suction slot and the suction pipe 61 and fed to a cyclone separator 90 or, in short, cyclone, which can be designed as a monocyclone.
  • the powder-air mixture flows tangentially into the cyclone 90 and spirals downwards in the cyclone.
  • the powder particles are pressed outwards onto the outer wall of the cyclone 90 by the centrifugal force generated by the rotation of the powder air flow.
  • the powder particles are conveyed downward towards the powder outlet of the cyclone and collected there.
  • the air freed from the powder particles is sucked out via the vertical central tube located in the cyclone 90.
  • the air stream cleaned in this way is often fed to a secondary filter 100 in order to filter out the remaining powder that remains in the air.
  • the powder recovered in the cyclone 90 can be used again for coating and fed to the powder center 1 via the powder line 94.
  • the ultrasonic sieve 24 is located in the work container 3, 23 between the powder storage container 3 and the powder container lid 23.
  • the locks 18 ensure that the work container is sealed airtight.
  • the screen cleaning device 27 and the container cleaning unit 28 are located as in the Figures 4 to 7 shown in the parking position.
  • the parking position for the container cleaning unit 28 is located next to the powder storage container 3.
  • the phrase “next to the powder storage container” also includes above, below, in front of or behind the powder storage container.
  • the sieve 24 is not absolutely necessary for the conveying operation.
  • the powder can also be conveyed without an ultrasonic sieve or without a sieve 24 at all.
  • the powder conveyance from the powder storage container 3 is stopped and the remaining powder still in the powder storage container 3 is sucked off with the powder conveyor 49 via the outlet 25.1 and the line 96.
  • the material valve M11 is opened for this purpose, the flushing valve S12 is closed during this time.
  • the excess pressure still prevailing in the working container 3, 23 is reduced to normal pressure and the locks 18 are opened.
  • the linear drive 12 lifts the container lid 23 so far that the cleaning container 10 can be moved between the powder container lid 23 and the powder storage container 3 with the help of the two linear axes 8 and 9.
  • the container cleaning unit 28 with the cleaning container 10 is then lowered until the lower cleaning arm 26 is located inside the powder storage container 3 and has a defined distance from the bottom 25 of the powder storage container 3.
  • the powder container lid 23 is now lowered until the upper cleaning arm 11 is inside the powder container lid 23 and has a defined distance from the powder container lid 23.
  • an air gap remains between the powder container lid 23 and the cleaning container 10.
  • An air gap also remains between the powder container 3 and the cleaning container 10. Air is sucked in from the afterfilter 100 through the air gaps. This prevents the powder-air mixture generated by the compressed air nozzles 11.1 and 26.1 during the cleaning process from escaping into the environment.
  • the unit consisting of the powder container lid 23, cleaning container 10 and powder storage container 3 can be sealed airtight with the locks 18.
  • compressed air is blown through the nozzles 11.1 and 26.1 in the direction of the inner walls of the powder container lid 23 and the powder storage container 3.
  • the resulting powder-air mixture is sucked off via the suction line 13 and can be fed to the cyclone 90 and/or the secondary filter 100.
  • the powder conveyor 4 can be cleaned as follows. With a flushing valve S13 (see Figure 3 ), compressed air is preferably blown intermittently into the powder inlet valve M20 and through the powder conveyor 4 towards the powder outlet valve M21. The compressed air is sucked out through the suction 13 in the direction of the after-filter 100. In addition, compressed air is supplied at the same time via valve 328 (see Figure 2 ) is blown through the porous wall of the tube 305 and the tube 305 is blown free of powder dust from the outside to the inside. For the cleaning process, the compressed air value on the pressure regulator 340 is significantly increased, for example to 5 bar. This means that significantly more compressed air flows and cleaning becomes more efficient.
  • the powder conveyor 5 can also be cleaned in the manner described above.
  • the two powder conveyors 4 and 5 can be operated via a material valve M22 (see Figure 3 ) be connected. If the material valve M22 is controlled accordingly, the two powder conveyors 4 and 5 can be cleaned via a single flushing valve S13. Instead, the powder conveyor 4 can also be cleaned via a first flushing valve and the powder conveyor 5 can be cleaned via a second flushing valve.
  • the powder conveyor 49 can also be cleaned in the manner described above. Instead of the flushing valve S13, the flushing valve S12 is used when cleaning the powder conveyor 49.
  • the cleaned powder can be suctioned off via the suction opening 162 and line 37.
  • the lid 15 is closed with the help of the pneumatic cylinder 17.
  • An air gap can remain between the lid 15 and the cleaning container 14.
  • the lid 15 can also be placed on the cleaning container 14 in an airtight manner.
  • Compressed air is now blown onto the sieve 24 from above and below through the nozzles 19.1 and 20.1.
  • the resulting powder-air mixture is sucked off via the suction line 13 and can be fed to the cyclone 90 and/or the secondary filter 100.
  • the following cleaning steps can be carried out.
  • the steps are preferably carried out automatically and coordinated by the controller 70.
  • the powder storage container 3 and the container lid 23 are cleaned with the cleaning unit 28 as described above.
  • a change to a different coating powder is carried out.
  • the other coating powder can be the powder with which the workpieces 65 are to be coated next. However, this is not absolutely necessary. Instead, you can also switch to a special cleaning agent.
  • the cleaning agent can, for example, contain granules a grain size between 2 mm and 7 mm.
  • the grain size, the grain material and the grain quality are preferably selected so that, on the one hand, they can be conveyed through all openings in the powder system and, on the other hand, they have a good cleaning effect.
  • the cleaning agent it is advantageous to ensure that no additional wear occurs in the powder system and no chemical incompatibility with the coating powder.
  • the conveying mode is switched to for a limited period of time so that the other coating powder or cleaning agent flows through the individual components of the system.
  • the short conveying operation for example, 3 kg of powder can be lost.
  • the material the powder or the cleaning agent
  • the powder lines 91, 92, 93 and 94 can also be flushed with the new material. This is particularly advantageous if the new powder is used for recovery.
  • the powder storage container 3 and the container lid 23 are then cleaned again using the cleaning unit 28.

Landscapes

  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Coating Apparatus (AREA)

Claims (16)

  1. Dispositif de convoyage permettant le transport de poudre de revêtement,
    - dans lequel est prévu un réservoir de poudre (3) qui comprend en bas une sortie de poudre (25.2) et un canal de sortie de poudre (203), la sortie de poudre (25.2) formant l'entrée du canal de sortie de poudre (203),
    - dans lequel le canal de sortie de poudre (203) est relié à un premier convoyeur de poudre (49) pour rapatrier la poudre du réservoir de poudre (3) vers un conteneur de poudre (111),
    - dans lequel le réservoir de poudre (3) présente un fond de réservoir (25) et, dans la zone du fond de réservoir (25), un certain nombre d'autres sorties de poudre (3.2),
    - dans lequel est prévu un dispositif de convoyage de poudre (3, 23, G1) pour transporter la poudre par l'une des autres sorties de poudre (3.2) du réservoir de poudre (3) vers un applicateur de poudre (80) .
  2. Dispositif de convoyage selon la revendication 1, dans lequel est prévu un troisième convoyeur de poudre (4) pour transporter la poudre du conteneur de poudre (111) dans le réservoir de poudre (3).
  3. Dispositif de convoyage selon la revendication 1 ou 2,
    dans lequel est prévue une vanne d'air de purge (S12) qui est reliée au canal de sortie de poudre (203) par une entrée d'air de purge (212) et qui est prévue pour souffler l'air de purge dans le canal de sortie de poudre (203) et/ou vers le premier convoyeur de poudre (49).
  4. Dispositif de convoyage selon l'une des revendications 1 à 3,
    dans lequel est prévu un élément de fluidisation (201) dans le canal de sortie de poudre (203).
  5. Dispositif de convoyage selon la revendication 4, dans lequel l'élément de fluidisation (201) est de forme annulaire.
  6. Dispositif de convoyage selon la revendication 4 ou 5,
    dans lequel l'élément de fluidisation (201) est mi-croporeux, ce qui fait qu'il est perméable à l'air et imperméable à la poudre.
  7. Dispositif de convoyage selon l'une des revendications 1 à 6,
    dans lequel le réservoir de poudre (3) présente une section transversale circulaire.
  8. Dispositif de convoyage selon l'une des revendications 1 à 7,
    dans lequel le réservoir de poudre (3) présente un fond (25) incliné vers le centre du réservoir de poudre (3).
  9. Dispositif de convoyage selon la revendication 8, dans lequel la sortie (25.2) du canal de sortie de poudre (203) se trouve au milieu du fond (25) incliné.
  10. Dispositif de convoyage selon l'une des revendications 1 à 9,
    dans lequel le canal de sortie de poudre (203) se présente en forme d'entonnoir.
  11. Dispositif de convoyage selon l'une des revendications 1 à 10,
    - dans lequel le premier convoyeur de poudre (49) comprend un réservoir de poudre (301) avec une entrée de poudre et une sortie de poudre, une vanne d'entrée de poudre (310) et une vanne de sortie de poudre (320),
    - dans lequel l'entrée de poudre est reliée à la vanne d'entrée de poudre (310) et la sortie de poudre à la vanne de sortie de poudre (320), et dans lequel le réservoir de poudre (301) peut être mis sous pression négative.
  12. Dispositif de convoyage selon l'une des revendications 1 à 11,
    dans lequel le troisième convoyeur de poudre (4) est construit comme le premier convoyeur de poudre (49).
  13. Dispositif de convoyage selon l'une des revendications 1 à 12,
    dans lequel est prévu sur le réservoir de poudre (3) un couvercle du réservoir (23) qui est au moins partiellement amovible.
  14. Centre de poudre avec un dispositif de convoyage selon la revendication 13,
    - dans lequel est prévue une unité de nettoyage (28) pour nettoyer le réservoir de poudre (3) et le couvercle du réservoir (23), laquelle peut être déplacée d'une position d'arrêt à côté du réservoir de poudre dans une position de nettoyage dans le réservoir de poudre au moyen d'un manipulateur (8, 9),
    - dans lequel est prévue une commande (70) permettant de commander l'unité de nettoyage (28) et le manipulateur (8, 9).
  15. Procédé de nettoyage du centre de poudre selon la revendication 14,
    - dans lequel la poudre restante se trouvant dans le réservoir de poudre (3) est évacuée au moyen du premier convoyeur de poudre (49),
    - dans lequel le réservoir de poudre (3) et le couvercle du réservoir (23) sont nettoyés au moyen de l'unité de nettoyage (28).
  16. Procédé selon la revendication 15,
    dans lequel les convoyeurs de poudre (4) sont nettoyés à l'air comprimé.
EP18167085.2A 2018-04-12 2018-04-12 Dispositif de transport destiné au transport de la poudre de revêtement, centre d'alimentation en poudre pourvu d'appareil de transport et procédé de nettoyage du centre d'alimentation en poudre Active EP3552716B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL18167085.2T PL3552716T3 (pl) 2018-04-12 2018-04-12 Urządzenie transportowe do przenoszenia proszku do powlekania, centrum proszkowe z urządzeniem transportowym i sposób czyszczenia centrum proszkowego
EP18167085.2A EP3552716B1 (fr) 2018-04-12 2018-04-12 Dispositif de transport destiné au transport de la poudre de revêtement, centre d'alimentation en poudre pourvu d'appareil de transport et procédé de nettoyage du centre d'alimentation en poudre
US16/377,119 US11065632B2 (en) 2018-04-12 2019-04-05 Conveying device for the conveying of coating powder, powder center with the conveying device, and method for the cleaning of the powder center
CN201910288206.1A CN110369174A (zh) 2018-04-12 2019-04-11 输送涂料粉末的输送装置、具有输送装置的粉末中心和清洁粉末中心的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18167085.2A EP3552716B1 (fr) 2018-04-12 2018-04-12 Dispositif de transport destiné au transport de la poudre de revêtement, centre d'alimentation en poudre pourvu d'appareil de transport et procédé de nettoyage du centre d'alimentation en poudre

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EP3552716B1 true EP3552716B1 (fr) 2024-02-28

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US (1) US11065632B2 (fr)
EP (1) EP3552716B1 (fr)
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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3409374A1 (fr) * 2014-04-07 2018-12-05 Nordson Corporation Procede de nettoyage d'une centre d'alimentation
CN111085363B (zh) * 2020-01-16 2021-04-30 温州慧思工业设计有限公司 一种粉末喷涂回收装置
CN112221776A (zh) * 2020-09-29 2021-01-15 柳州市中晶科技有限公司 一种具备油漆回收功能的机器人喷涂装置
CN113713980B (zh) * 2021-09-02 2022-12-20 中山市君禾机电设备有限公司 粉箱及包含其的供粉中心
FR3142919A1 (fr) * 2022-12-07 2024-06-14 Exel Industries Unité d’alimentation et station de poudrage comprenant une telle unité d’alimentation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4770344A (en) * 1986-12-08 1988-09-13 Nordson Corporation Powder spraying system
US4824295A (en) * 1984-12-13 1989-04-25 Nordson Corporation Powder delivery system

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4381898A (en) * 1981-01-21 1983-05-03 Eutectic Corporation Device for the controlled feeding of powder material
US6669780B2 (en) * 2000-10-24 2003-12-30 Illinois Tool Works Inc. Color change booth
US7793869B2 (en) * 2003-08-18 2010-09-14 Nordson Corporation Particulate material applicator and pump
DE102007005310A1 (de) * 2007-02-02 2008-08-07 Itw Gema Ag Beschichtungspulver-Filtervorrichtung
EP2374546A1 (fr) * 2010-04-12 2011-10-12 Nordson Corporation Système d'alimentation de poudre et procédé de changement de couleur dans un système d'alimentation de poudre
DE102011004352B4 (de) * 2011-02-18 2014-05-15 Gema Switzerland Gmbh Vorrichtung zum pneumatischen Fördern von Pulver
DE102014003373A1 (de) * 2014-03-06 2015-09-10 Daniel Seiler Automatischer Farbwechsel beim Pulverbeschichten
EP3409374A1 (fr) * 2014-04-07 2018-12-05 Nordson Corporation Procede de nettoyage d'une centre d'alimentation
EP3238832B2 (fr) 2016-04-29 2024-02-14 Wagner International AG Dispositif de transport destine a transporter de la poudre de revetement vers un applicateur de poudre, installation de revetement de poudre et procede de fonctionnement d'un dispositif de revetement de poudre
CN207551369U (zh) * 2017-11-22 2018-06-29 雅安百图高新材料股份有限公司 一种粉体流态化输送装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4824295A (en) * 1984-12-13 1989-04-25 Nordson Corporation Powder delivery system
US4770344A (en) * 1986-12-08 1988-09-13 Nordson Corporation Powder spraying system

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PL3552716T3 (pl) 2024-05-20
US11065632B2 (en) 2021-07-20
EP3552716A1 (fr) 2019-10-16
US20190314836A1 (en) 2019-10-17
CN110369174A (zh) 2019-10-25

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