EP2633921B1 - Installation de laquage alimentée par une pompe monopiston - Google Patents

Installation de laquage alimentée par une pompe monopiston Download PDF

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Publication number
EP2633921B1
EP2633921B1 EP12001431.1A EP12001431A EP2633921B1 EP 2633921 B1 EP2633921 B1 EP 2633921B1 EP 12001431 A EP12001431 A EP 12001431A EP 2633921 B1 EP2633921 B1 EP 2633921B1
Authority
EP
European Patent Office
Prior art keywords
paint
piston pump
line
spray line
conveying
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
EP12001431.1A
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German (de)
English (en)
Other versions
EP2633921A1 (fr
Inventor
Winfried Ott
Volker Weiss
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.)
Lactec GmbH
Original Assignee
Lactec 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 Lactec GmbH filed Critical Lactec GmbH
Priority to EP12001431.1A priority Critical patent/EP2633921B1/fr
Priority to US13/782,851 priority patent/US9968952B2/en
Publication of EP2633921A1 publication Critical patent/EP2633921A1/fr
Application granted granted Critical
Publication of EP2633921B1 publication Critical patent/EP2633921B1/fr
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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
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/035—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material to several spraying apparatus
    • 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
    • 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
    • B05B12/14—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

Definitions

  • the invention relates to a paint shop with a number of provided for applying paint on an object to be coated atomizers, which are connected via a common supply line system, in particular a common main supply line or with separate stub lines to a paint supply unit.
  • Such paint systems are used for example in the coating or painting of motor vehicle bodies.
  • a main supply line for supplying the paint is usually provided, for example, in the manner of a so-called loop at a corresponding Paint booth along or around this can be performed. From this main supply line or ring line then branch off with the interposition of suitable components such as valves or the like stub lines, which open into the respective atomizers and can convey the paint to these.
  • a plurality of ring lines may be provided, wherein suitable color changers can usually be connected to the system at the branch of the respective branch lines.
  • suitable color changers can usually be connected to the system at the branch of the respective branch lines.
  • the paint supply unit immediately downstream stub lines may be provided to the delivery points instead of the ring lines.
  • the main supply line is usually connected on the input side to a paint supply unit via which the paint material from a paint container, such as a replaceable paint bucket or the like, can be fed into the main supply line by means of a feed pump or a conveying member.
  • a feed pump or a conveying member In the embodiment of the main supply line as a so-called ring line, this end may in turn also be connected in the manner of a circular or annular guide to the paint reservoir, so that the guided in the loop, recirculated paint on the output side can flow back into the paint reservoir.
  • the main supply line but also run in the manner of a spur line and connected only on the input side to the paint reservoir.
  • the invention is therefore based on the object of specifying a paint shop of the type mentioned above, which is suitable to a particular extent and with particularly low maintenance also for a needs-based provision of particularly low individual paint amounts.
  • This object is achieved in that the intended for paint feed into the main supply introduction conveying member is designed as a single-piston pump.
  • the invention is based on the consideration that the operating costs can be kept particularly low especially in the provision of the smallest individualized paint quantities by consistently avoiding or at least minimizing the possible resulting, especially in the form of just incurred in color changes to discard residual paint amounts becomes.
  • the painting system in its entirety should consequently be designed to keep the amount of paint required for operation in the system to be particularly low.
  • the delivery member for feeding the paint from the reservoir into the main supply line largely such that to maintain the operation in the conveying member possible no or only small amounts of paint are required.
  • the conveying member or the delivery pump should be specifically designed so that it is completely or at least largely completely emptied of residual paint amounts, and that all located in the conveying member paint quantities without affecting the operational reliability in the main supply line are aus the conveying member.
  • the conveying member should be designed in the manner of a metering cylinder or as a single-piston pump.
  • the main supply line in addition to the main supply line is designed as a so-called piggable line, in which, for example, from the EP 1 142 649 B1 known pigging technology is a "packet" or needs-based coating of the main supply line with individualized and adapted to the identified needs amounts of paint is possible.
  • a piggable line in which, for example, from the EP 1 142 649 B1 known pigging technology is a "packet" or needs-based coating of the main supply line with individualized and adapted to the identified needs amounts of paint is possible.
  • the conveying member while largely avoiding residual paint amounts remaining therein, the individually and as needed determined amount of paint in the main supply line fed, wherein after the feed to the media-side conclusion of the thus formed paint package a pig is introduced into the main supply line.
  • the conveying member is alternatively or additionally controlled in an advantageous development and designed for different selectable delivery rates.
  • An even further adaptation of the painting to the requirements of a reliable provision of even the smallest amounts of paint can be achieved by the single-piston pump is advantageously designed for a delivery pressure of at least 10 bar.
  • relatively high delivery pressure is taken into account in particular that even with very small amounts of paint targeted delivery of each paint package to individual sampling stations, ie in particular the respective branch points of the individual atomizers associated stubs should be possible.
  • the length of the respective paint pact in the line system should be sufficiently high to ensure reliable positioning of the paint package along the supply line.
  • the main supply line is dimensioned with a comparatively low cable cross-section, so that even a small-volume paint package has a certain length in the wiring harness.
  • the output pressure or discharge pressure of the single-piston pump should be selected appropriately.
  • a particularly reliable and metered delivery even the smallest amounts of paint in the main supply line can be achieved by combined in an advantageous development of the intended as dosing and trained single-piston pump is suitably combined with a sensor system for comparatively high accuracy determination of the output from the pump and fed into the main supply line amount of paint.
  • the single-piston pump configured as a metering cylinder is in turn configured as a suitable paint quantity sensor such that a position transducer is provided for determining the piston position within the single-piston pump.
  • the amount of paint dispensed from the metering cylinder or the single-piston pump into the main supply line can thus be determined with comparatively high accuracy, taking into account the other dimensioning values (in particular the piston diameter and the like).
  • the movement increments of the pump or of the pump piston can be sensed and evaluated as flow rate signals.
  • the single-piston pump is followed by a flow sensor downstream of the delivery, so that the quantity of paint discharged from the delivery pump can also be reliably determined via it.
  • the system is advantageously designed for a suitable detection of the starting time of the actual conveying process.
  • the knowledge can be taken into account that, especially in the provision of small amounts of paint initially - after suitable provision of a reservoir with the required paint in the desired color - a suction is required, with which the paint is supplied to the conveying member.
  • the single-piston pump is advantageously provided on the conveyor side with a pressure sensor for determining the delivery pressure.
  • a pressure sensor for determining the delivery pressure.
  • the pressure sensor is assigned a signal generator in a further advantageous embodiment, which in the event that a clearly detectable increase in the Delivery pressure of more than 10% is detected, outputs a suitable control value or state-dependent output a control value such that on the basis of the control value between the states "delivery pressure higher than the limit" on the one hand and "delivery pressure lower than the limit” is distinguishable.
  • the increase in the delivery pressure is dependent on the diameter of the line to be filled, the viscosity of the medium to be pumped and the respective flow rate.
  • a limit value of 0.5 bar, particularly preferably of 1 bar is advantageously selected taking into account these different parameters, a reliable distinction between the state "air at the delivery side of the pump” on the one hand and “paint on the delivery side of the pump” on the other hand, and that a reliable consideration of the onset of paint promotion is possible.
  • control signal given by this signal generator can be suitably further processed in a suitable manner in the overall system, for example within an automation system, and used for system control.
  • an immediate use of this control signal to the system control is provided to the effect that an automatic switching from "venting mode” to "operating mode” takes place at the onset of this control signal.
  • the signal generator is advantageously connected for determining the control signal on the signal side with one of the branch point of a vent line from one of the single-piston pump conveyor side downstream paint line associated switching unit.
  • a particularly compact and thus also material-saving construction of the paint shop can be achieved by carrying out, in an advantageous development, essential components of the paint supply unit in the manner of an integrated unit.
  • a distributor block is advantageously connected to the single-piston pump on the delivery side, in which the delivery line of the single-piston pump branches into a connecting line for the main supply line on the one hand and a vent line on the other hand.
  • the compact and integrated design is still further accessible, in which in a further advantageous embodiment of the pressure sensor and optionally the switching unit for the branch point of the vent line from the main supply line are also integrated into the manifold block.
  • the paint shop is also upgraded even for the processing of even the smallest amounts of paint by the suction of the single-piston pump is designed specifically for the processing of even the smallest amounts of paint.
  • the suction line of the single-piston pump is designed for a particularly short total length of at most 200%, more preferably at most 150%, the height of the reservoir, in particular taking into account that the suction should be shorter than twice the height of the provision of the paint provided paint container.
  • the suction line should have a diameter of not more than 25 mm.
  • the intake pipe should be exchangeable and selected with regard to their choice of material and dimensioning, in particular with regard to the inner diameter, adapted to the viscosity of the paint to be delivered. Especially in the selection of the inner diameter is advantageously taking into account the viscosity of the amount of paint to be delivered the consequent requirements in terms of intake pressure and the like account.
  • the paint shop is in a particularly advantageous embodiment for the widest possible and virtually residue-free emptying of the paint container, with which the supplied paint to be processed is provided.
  • an intake pipe connected to the suction line of the single-piston pump, which is introduced into the paint container for paint pickup, is advantageously provided at its free end with a backstop.
  • This can for example be designed as a suitable non-return valve, as a ball check valve or the like and is advantageously arranged in the immediate end region of the intake manifold.
  • residual lacquer amounts which may still be present in the lacquer container are specifically selected in a selected one Ground area of the paint container, preferably in the immediate vicinity of the free end of the intake pipe to collect, so that even for these residual paint amounts still a discharge into the pump is possible.
  • one of the single-piston pump associated receiving unit for a paint container is formed pivotable in an advantageous embodiment. By this configuration, the paint container can be tilted as needed, so that it collects residual paint remaining in a limited space at the bottom of the container.
  • the intake pipe is advantageously dimensioned sufficiently long and, in particular, has a length of more than the height of the paint container provided for providing the paint.
  • the feed pump is suitably suitably positioned in height according to the liquid level within the paint container, the positioning is adjusted with increasing Lackaustrag from the paint container suitably, so that the inflow region of the feed pump always dips straight into the liquid surface.
  • the single-piston pump can be pivoted in its longitudinal axis by a pivoting angle of at least 180 °, or even fixed with the suction side down directly above the reservoir, so that said "overhead operation" is possible.
  • the suction can be significantly shortened and executed with a length smaller than the height of the reservoir.
  • the suction is exchanged with an immersion depth of only a few centimeters in the paint (the liquid to be delivered) and measured the distance of the pump to the liquid level and / or the distance of the cover plate to the liquid by means of a distance sensor.
  • the sensor can be embodied as an optical, acoustic, electrical or inductive sensor, preferably as a hydrostatic sensor, as an ultrasound system, as a guided microwave or particularly preferably as a capacitive sensor.
  • the pump or its suction line or the container itself is tracked to the liquid level sinking during the suction of the container contents by a motor-driven positioning device, so that the lower end of the suction line always remains below the liquid level.
  • the length of the suction line can be smaller than the filling level of the liquid in the reservoir, with a suitable selection of the distance sensors and the control parameters of the positioning even a length of the suction of only a few centimeters is possible.
  • the content of the suction line and thus the usable for painting filling amount of the paint conveyor can be further minimized.
  • the discharge of the sucked paint (the liquid), or the guide of the vent line can be done centrally through the piston rod of the pump, so that the first suction of the liquid inevitably with sucked air above the liquid in the Pump cylinder can escape upwards.
  • the advantages achieved by the invention are in particular that by the design of the paint supply to the main supply introduction provided conveying member as a single-piston pump, in particular in combination with the further provided sensors on the one hand and measures to minimize the so-called "dead", ie to maintain the operational processes necessary, volumes on the other hand, in addition to the expertisemanden amount of paint for the maintenance of operational procedures necessary residual paint amount to be kept particularly low and the paint feed can be made particularly needs-based.
  • the paint consumption of the system as a whole and the production of rejects or no longer usable residual paint can be kept particularly low even in extremely small quantities required in individual cases and frequently required color changes.
  • each coating line 2, 4 each comprises a plurality of atomizers 6 arranged one behind the other and provided for the application of paint to the coated article, the atomizers being formed to form the respective coating line 2, 4 via an inside of the respective coating line 2, 4 the atomizers 6 common main supply line 8 and 10 are connected to a two coating lines 2, 4 common paint supply unit 12.
  • the paint supply of the atomizer 6 is provided via the main supply lines 8, 10, which thus form a supply line system 8, 10 common to the atomizers 6.
  • the supply line system 8, 10 could also be designed as a plurality of individual branch lines or the like, which lead from a common branch point to the individual atomizers.
  • the main supply lines 8, 10 of Lackierstrlinde 2, 4 are freely selectable in length and lead to a number of arranged in a paint booth, not shown, color changer 14, from which leads each a stub to the respective atomizers 6.
  • the main supply line 8, 10 is each executed piggable and can be designed as a stub or ring line.
  • the respective main supply line 8, 10 in this case has at its beginning or at its end on the pump side each a release valve 56, which is followed by a first parking station 58 for a newt. Behind the last delivery point, a second parking station 59 is provided for the pig, in which the pig can pass through the operatively flowing past him fluid.
  • the pigging station is adjoined by a valve combination which comprises at least one valve for release into a collecting line or into a collecting container and a valve for flushing agent and a valve for a pushing medium, preferably compressed air.
  • a valve combination which comprises at least one valve for release into a collecting line or into a collecting container and a valve for flushing agent and a valve for a pushing medium, preferably compressed air.
  • the respective main supply line 8, 10 suitably designed with recourse to pigging technology, as for example in the EP 1 142 649 B1 is described, the disclosure of which is fully incorporated with respect to the pigging technique used ("incorporation by reference").
  • the paint shop 1 is specifically designed to allow for very low material consumption under very low operating costs and a minimum application of small amounts of paint and thus the need-based coating of very small series or items.
  • this is fundamentally the feeding of demand-sized paint or varnish packages provided using the pigging technology in the respective main supply lines 8, 10, so that residual amounts of paint in the subsequent systems can be kept particularly low.
  • the paint supply unit 12 is designed in particular to the processing of very small quantities with substantial reduction of the resulting Committee even with frequent color changes.
  • the paint supply unit 12 on the one hand designed to keep the amount of paint needed to maintain the operational processes in the manner of a resource particularly low, on the other hand, the corresponding line volumes and the like are kept relatively low.
  • the conveying member 20 of the paint supply unit 12, which causes the paint feed into the main supply line 8, 10 from a lacquer container 22 provided for providing the lacquer is designed as a single-piston pump 20.
  • the single-piston pump 20 is designed for a delivery pressure of at least 10 bar, so that comparatively small-sized cable cross-sections can be reliably supplied with paint (can be filled).
  • the single-piston pump 20 comprises a guided in a cylinder 24 piston 26 which is displaceable via a piston rod 28 within the cylinder 24.
  • piston 26 Through the cylinder 24, the piston 26 and a cover plate 30 while a delivery chamber 32 is formed, the volume of which is variable by the displacement of the piston 26 within the cylinder 24.
  • the delivery chamber 32 is connected to the intake side via an intake system 34 with the interior of the paint container 22 and the delivery side connected to the main supply line 8 and 10 respectively.
  • the conveying member 20 of the supply unit 12 as a single-piston pump ensures that the sucked and spent in the delivery chamber 32 quantities of paint can be fed almost completely and residue-free in the main supply lines 8, 10.
  • a comparatively high-precision discharge of precisely metered amounts of paint is made possible by a correspondingly precise control of the piston position within the cylinder 24, so that the single-piston pump 20 can also be used in the manner of a metering cylinder for highly accurate paint feed.
  • the paint supply unit 12 is also understand with a number of sensors for accurate determination of the delivered paint amount.
  • the piston rod 28 of the single-piston pump 20 is provided with a displacement transducer 40.
  • the highly accurate determination of the piston position within the cylinder 24 is made possible, from which, taking into account the other dimensioning parameters, in particular the cylinder cross-section, the given paint volume can be precisely determined.
  • the movement increments of the piston 26 in the single-piston pump 20 can be sensed and evaluated as flow rate signals.
  • the single-piston pump 20 can also be followed downstream by a flow sensor for determining the delivered quantity of paint.
  • a flow sensor for determining the delivered quantity of paint.
  • Such flow sensors not shown in detail in the exemplary embodiment, could in particular be assigned to the connection lines 36, 38.
  • the automated detection of the time is also provided in a startup of the paint promotion, as he often happens frequent color changes, in which the supply of paint in the main supply lines 8, 10th starts.
  • This will specifically account for the circumstance worn that when sucking and before the actual paint promotion, the single-piston pump 20 initially and as long as the delivery volume 32 is not completely filled with paint, conveyor only emits air. Because this represents a compressible medium, but the paint to be delivered is in contrast incompressible, the incipient paint delivery on the delivery side of the single-piston pump 20 results in a corresponding pressure increase in the delivery chamber 32 of the single-piston pump 20 at the moment in which the delivery chamber 32 is completely covered with lacquer is filled. In order to be able to determine this point in time, the single-piston pump 20 is assigned a pressure sensor 46 on the delivery side for determining the delivery pressure.
  • the pressure sensor 46 is associated with a signal generator 48.
  • the signal generator 48 is designed to output a control signal in the event that the delivery pressure exceeds a system-dependent adjustable limit of, for example, 0.5 bar. By specifying this limit, the control signal issued by the signal generator 48 is thus characteristic of a distinction as to whether the delivery chamber 32 of the single-piston pump 20 is completely filled with lacquer or not. The control signal can thus be used directly for a corresponding detection of the beginning of the actual paint delivery.
  • this control signal can be done in an automation unit or a central control center for the paint shop 1.
  • the signal generator 48 for the transmission of the control signal on the signal side with one of the branch point 50 of a vent line 52 of the one-piston pump 20 downstream connected paint line 54 associated switching unit 56 is connected.
  • the paint supply unit 12 is also designed for an integrated and thus particularly compact design.
  • a distributor block 60 is directly connected to the single-piston pump 20, in which the delivery line of the single-piston pump 20 branches off the connection lines 36, 38 for the main supply lines 8, 10 on the one hand and the vent line 52 on the other hand.
  • the distributor block 60 is flanged directly for the integrated and compact design of the single-piston pump 20, which due to the schematic representations in FIG. 1 is not recognizable.
  • the manifold block 60 further valves for detergent, compressed air and / or release of various rinsing or venting paths are arranged as needed.
  • the intake system 34 of the supply unit 12 is designed appropriately.
  • the intake system 34 of the single-piston pump 20 has an intake pipe 72 connected to the delivery chamber 32 of the single-piston pump 20 via a suction line 70.
  • the suction line 70 is kept particularly short, so that the corresponding volumes can be kept particularly low, and has a length of at most 200% of the height of the reservoir.
  • the intake pipe 72 is also designed with regard to the discharge of smallest residual amounts from the paint container 22 suitable and has at its free end 74 a backstop, especially in the form of a Check valve, preferably a ball check valve, on.
  • the intake pipe 72 can still be designed to dispense a residual amount of paint when the container 22 is idling, for example by a piston guided in the intake pipe 72 or a ball floating therein, which transfers the remaining amount of residual paint within the intake pipe 72 into the delivery volume 32.
  • the intake pipe 72 is also sufficiently rigid in terms of its choice of material and dimensioned in its length so that it exceeds the height of the container 22 such that upon penetration of the intake pipe 72 into the paint container 22 a local deformation of the container bottom through the free end 74 of the intake manifold 72 is possible. In order for the penetration of the intake pipe 72 into the paint container 22, a local depression can be produced in the container bottom, in which residual amounts of paint can accumulate, so that targeted removal of even the smallest residual amounts of paint is not favored.
  • the intake system 34 also includes at least one release valve 35, with the opening of which the intake line to the delivery chamber 32 can be unlocked. The release valve 35 is closed when the paint located in the delivery chamber 32 is to be pressed again in the direction of the connecting line.
  • valve unit 31 Compactly connected to the output system 34 is a valve unit 31, in which various valves are integrated, with which the output system 34 and the path to and in the distributor block 60 can be flushed.
  • valve unit 31 at least valves for supplying detergent and compressed air are included, as well as release valves for selecting Spülwege and / or associated pumping valves, which direct the soiled detergent in disposal lines.
  • FIGS. 2 and 3 Details of the paint supply unit 12 are in the FIGS. 2 and 3 shown.
  • the single-piston pump 20 in turn can be designed pivotably with a pivoting range of at least 180 °, or be installed in a fixed "up-side down" position, as in Fig. 4 shown.
  • the setting of an "overhead position" for the single-piston pump 20 is possible, so that it can be dipped with its intake directly and waiving a longer suction or the like in the container 22.
  • a reliable discharge of the paint is thus particularly favored.
  • the intake pipe 34 can be significantly shortened and executed with a length smaller than the height of the reservoir 22.
  • the suction pipe is immersed in the paint (the liquid to be conveyed) at an immersion depth of only a few centimeters and the distance of the pump to the liquid level 81 is measured by means of an optical, acoustic, electrical or inductive distance sensor 82.
  • the pump or its suction line is tracked to the liquid level 81 sinking during the suction of the container contents by a motor-driven positioning device 83, so that the lower end of the suction line 74 always remains below the liquid level.
  • the length of the suction line 34 can be significantly smaller than the filling level of the liquid in the reservoir.
  • the discharge of the sucked paint (the liquid), or the guide of the vent line 52 can be done centrally through the piston rod of the pump, so that the first suction of the liquid inevitably with sucked air above the liquid in the delivery chamber 32 of the pump can escape upwards.
  • the positioning device 83 can be assigned directly to the pump or its suction line and track this in accordance with the change in the liquid level 81 in its height suitable. In the exemplary embodiment, however, the positioning device 83 is associated with the reservoir 22 in the manner of a telescopically extendable support mechanism, so that its height can be suitably adapted to the position of the pump.
  • Fig. 5a, 5b in each case the cover plate 30 is shown in longitudinal section, as it is designed in particular for the overhead operation of the single-piston pump.
  • Fig. 5a, 5b show, integrated in the cover plate 30 valves and connections 90 for stubs, in the embodiment according to Fig. 1 contained in the manifold block 60.
  • a pigging station can also be integrated in the cover plate 30.

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  • Coating Apparatus (AREA)
  • Spray Control Apparatus (AREA)
  • Reciprocating Pumps (AREA)

Claims (15)

  1. Installation de laquage (1) dotée d'un certain nombre de pulvérisateurs (6) prévus et destinés à l'application de laque sur un objet destiné à recevoir un revêtement, lesquels pulvérisateurs sont raccordés à une unité d'alimentation en laque (12) par l'intermédiaire d'un système commun de canalisation d'alimentation (8, 10), caractérisée en ce que l'organe de transport (20) prévu et destiné à l'alimentation en laque dans le système de canalisation d'alimentation (8, 10) est conçu en tant que pompe à monopiston (20).
  2. Installation de laquage (1) selon la revendication 1, dont la pompe à monopiston (20) est dimensionnée pour une pression d'alimentation d'au moins 10 bars.
  3. Installation de laquage (1) selon la revendication 1 ou 2, dans laquelle la pompe à monopiston (20) est pourvue d'un capteur de déplacement (40) destiné à la détermination de la position du piston.
  4. Installation de laquage (1) selon l'une des revendications 1 à 3, sur la pompe à monopiston (20) de laquelle est monté un débitmètre (46) en aval, côté alimentation.
  5. Installation de laquage (1) selon l'une des revendications 1 à 4, dont la pompe à monopiston (20) est pourvue, côté alimentation, d'un capteur de pression (46) destiné à la détermination de la pression d'alimentation.
  6. Installation de laquage (1) selon la revendication 5, dans laquelle un générateur de signaux (48), associé au capteur de pression (46) et destiné à l'émission d'un signal de réglage, est conçu pour le cas où la pression d'alimentation dépasse une valeur limite de 0,5 bar.
  7. Installation de laquage (1) selon la revendication 6, dans laquelle le générateur de signaux (48) destiné à la transmission du signal de réglage est raccordé, côté signal, à une unité de commutation associée au point de bifurcation d'une canalisation de ventilation (52) par une canalisation de laquage (54) installée en aval et côté alimentation de la pompe à monopiston (20).
  8. Installation de laquage (1) selon l'une des revendications 1 à 7, à la pompe à monopiston (20) de laquelle est directement raccordé, côté alimentation, un bloc de distribution (60) dans lequel la canalisation de transport de la pompe à monopiston (20) se ramifie, d'une part, dans une canalisation de raccordement (36, 38) pour le système de canalisation d'alimentation (8, 10) et, d'autre part, dans une canalisation de ventilation (52).
  9. Installation de laquage (1) selon l'une des revendications 1 à 8, dans laquelle un tube d'aspiration (72, 74) raccordé à la canalisation d'aspiration (70) de la pompe à monopiston (20) est pourvu d'un blocage antiretour au niveau de son extrémité libre.
  10. Installation de laquage (1) selon l'une des revendications 1 à 9, dans laquelle un tube d'aspiration (72, 74) raccordé à la canalisation d'aspiration (70) de la pompe à monopiston (20) présente une longueur supérieure à la hauteur d'un récipient de laque (22) prévu et destiné à la mise à disposition de la laque.
  11. Installation de laquage (1) selon l'une des revendications 1 à 10, dans laquelle une unité de réception (80) associée à la pompe à monopiston (20) et destinée à un récipient de laque (22) est conçue de manière à pouvoir pivoter.
  12. Installation de laquage (1) selon l'une des revendications 1 à 11, dont la pompe à monopiston (20) est capable de pivoter dans son axe longitudinal autour d'un angle de pivotement d'au moins 180°.
  13. Installation de laquage (1) selon la revendication 12, dans laquelle le tube d'aspiration de la pompe à monopiston (20) est plus court que la hauteur de remplissage d'un récipient de laque (22) prévu et destiné à la mise à disposition de la laque.
  14. Installation de laquage (1) selon la revendication 12 ou 13, laquelle dispose d'un capteur mesurant de manière continue la distance de la pompe à monopiston (20) par rapport au niveau de liquide.
  15. Installation de laquage (1) selon l'une des revendications 12 à 14, dans laquelle la position de la pompe à monopiston (20), du tube d'aspiration et/ou du récipient de laque (22) est automatiquement asservie à la hauteur de remplissage dans le réservoir (22), laquelle hauteur de remplissage diminue lors de l'aspiration.
EP12001431.1A 2012-03-02 2012-03-02 Installation de laquage alimentée par une pompe monopiston Active EP2633921B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12001431.1A EP2633921B1 (fr) 2012-03-02 2012-03-02 Installation de laquage alimentée par une pompe monopiston
US13/782,851 US9968952B2 (en) 2012-03-02 2013-03-01 Paint-spray line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12001431.1A EP2633921B1 (fr) 2012-03-02 2012-03-02 Installation de laquage alimentée par une pompe monopiston

Publications (2)

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EP2633921A1 EP2633921A1 (fr) 2013-09-04
EP2633921B1 true EP2633921B1 (fr) 2016-11-16

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EP (1) EP2633921B1 (fr)

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CN108176531A (zh) * 2018-03-20 2018-06-19 李怀均 用于水性涂料静电喷涂的供给装置以及喷涂系统
CN108273694B (zh) * 2018-04-26 2020-09-22 安徽皖南新维电机有限公司 一种电动机转子线圈喷漆后冷却一体化成型装置
CN110404714B (zh) * 2019-08-12 2020-12-08 阜南县猛发工艺品有限公司 一种木材加工用喷漆装置
US20210293529A1 (en) * 2020-03-17 2021-09-23 Epic Solutions, Inc. System and method for calculating thickness of marking material applied to a roadway surface

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US4516700A (en) * 1982-03-31 1985-05-14 Pyles Division Hot melt anti-surge dispensing system
US5655896A (en) * 1994-01-25 1997-08-12 Nordson Corporation Apparatus for dispensing conductive coating materials having multiple flow paths
US5738728A (en) * 1996-07-26 1998-04-14 Bio Dot, Inc. Precision metered aerosol dispensing apparatus
DE10006310A1 (de) 2000-02-12 2001-08-16 Lactec Gmbh Verfahren und Vorrichtung zum Beschichten
US7004407B2 (en) * 2001-12-04 2006-02-28 Mystic Tan, Inc. Uniform metering system for spray applications
WO2003095106A2 (fr) * 2002-05-07 2003-11-20 Behr Systems, Inc. Systeme de distribution de peinture et d'application et procede
DE102005060959A1 (de) * 2005-10-07 2007-04-19 Dürr Systems GmbH Beschichtungsmittel-Versorgungseinrichtung und zugehöriges Betriebsverfahren
DE102006002389A1 (de) * 2006-01-17 2007-07-19 SCHÜTZE, Thomas System zur Zuführung mehrere Farbkomponenten für mindestens eine Lackierstation, insbesondere für Kraftfahrzeugkarosserien
PL2101925T3 (pl) * 2006-12-12 2015-06-30 Duerr Systems Gmbh Urządzenie powlekające z zespołem dozowania
DE102010019612A1 (de) * 2010-05-06 2011-11-10 Dürr Systems GmbH Beschichtungseinrichtung, insbesondere mit einem Applikationsgerät, und zugehöriges Beschichtungsverfahren, das einen zertropfenden Beschichtungsmittelstrahl ausgibt
EP2425899B1 (fr) * 2010-09-06 2013-08-21 LacTec GmbH Changeur de teinte

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US20130228123A1 (en) 2013-09-05
US9968952B2 (en) 2018-05-15
EP2633921A1 (fr) 2013-09-04

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