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WO2007006325A1 - Pulverisateur de rotor et procede de mise en oeuvre de celui-ci - Google Patents

Pulverisateur de rotor et procede de mise en oeuvre de celui-ci Download PDF

Info

Publication number
WO2007006325A1
WO2007006325A1 PCT/EP2005/007488 EP2005007488W WO2007006325A1 WO 2007006325 A1 WO2007006325 A1 WO 2007006325A1 EP 2005007488 W EP2005007488 W EP 2005007488W WO 2007006325 A1 WO2007006325 A1 WO 2007006325A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor head
speed
support member
base member
drive control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2005/007488
Other languages
English (en)
Inventor
Rudolf Albrecht
Karl Helminger
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.)
Ecolab Inc
Original Assignee
Ecolab Inc
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 Ecolab Inc filed Critical Ecolab Inc
Priority to PCT/EP2005/007488 priority Critical patent/WO2007006325A1/fr
Publication of WO2007006325A1 publication Critical patent/WO2007006325A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member
    • B05B3/1085—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member with means for detecting or controlling the rotational speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies
    • B05B13/0636—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies by means of rotatable spray heads or nozzles
    • 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
    • B05B15/14—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member
    • B05B3/1035—Driving means; Parts thereof, e.g. turbine, shaft, bearings

Definitions

  • the present invention relates to an apparatus for applying a liquid material to a surrounding surface with the features of the generic part of claim I 5 claim 3, or claim 17. Such apparatus is commonly called a rotorspray.
  • the present invention further relates to a method for operating such and apparatus, namely a rotorspray, with the features of the generic part of claim 21 or claim 23.
  • a rotorspray is an apparatus for applying a liquid material like oil, a resin or the like to a surrounding surface of a cavity, in particular a bore or a drilling.
  • Large size rotorsprays are used for vertical application in manholes, wetwells or other vertical shafts or conduits (US-A-5 092 265), whereas rotorsprays of smaller size are widely used in manufacturing, e.g. in the automotive business for coating of the inner surface of cylinders in engine blocks or the like (DE-C-4 331 394).
  • the liquid material to be applied to the surrounding surface has to have a sufficiently low relative viscosity in order to be efficiently applicable to the surface.
  • the surface normally is a drilling, bore or otherwise cylindrical cavity
  • the elongated support member with the rotor head at its end is axially moved into the cavity with generally equal radial distance to all sides.
  • the rotor head is accelerated to its high operating speed (US-A-5 092 269 mentions a speed of about 6000 rpm). Then the supply of liquid is started so that liquid is delivered from the delivery outlet to the rotor head from where, due to its high rotational speed, the liquid is thrown generally radially outward towards the surrounding surface. The result is an even, efficient coating of the surface with the respective liquid material.
  • the apparatus which forms the starting point of the present invention already has a collision detection system on the rotor head of this apparatus.
  • the collision detection system comprises a free end of the elongated support member that projects beyond the rotor head itself and is displaceable axially against the force of a biasing spring.
  • a mechanical switch generates a malfunction signal if the free end strikes an obstacle so that the apparatus can be stopped before the rotor head itself hits the obstacle.
  • collision detection system on such an apparatus is useful for obstacles that are blocking the axial feed of the rotor head. If, however, the apparatus is positioned within the cavity off-center or at an angle relative to the axial extension of the cavity this collision detection system is mostly useless.
  • the present invention now has as an object to improve the rotorspray in a way to reduce the risk of malfunction with the necessity to interrupt the operation of the apparatus. Similarly, the method for operating such a rotorspray shall be improved.
  • the apparatus with the features of claim 1 has a sophisticated collision detection system realized by the drive control of the apparatus. There is no mechanical modification of the rotor head like in the prior art collision detection system. Instead the drive control is adapted to control the rotational speed of the rotor head to a low testing speed. Running at the low testing speed the rotor head may be fed axially into the cavity in a test run.
  • the drive control is adapted to monitor the rotation of the rotor head at the low testing speed and is adapted to generate a malfunction signal if the rotation of the rotor head is unduly retarded, the surroundings of the rotor head within the cavity can be tested at low rotational speed before the actual coating at high operating speed begins. A light collision of the rotor head with an obstacle has no detrimental effect on the rotor head at the low testing speed.
  • the low testing speed must be selected appropriately so that the rotor head will not be damaged, in particular will not be out-of-balance.
  • the speed of the axial advance of the rotor head within the cavity is of course important as well. Moreover it is important that the drive control reacts fast enough to stop the apparatus upon occurrence of a malfunction signal and/or to reverse the axial movement of the rotor head in the cavity.
  • the essential idea of the invention is that due to the low testing speed of the rotor head the impact of a collision on the rotor head and the apparatus in total is much less problematic then at the high operating speed.
  • base member defines any part of an apparatus according to the invention that is adapted to carry the elongated support member.
  • the elongated support member is the part of the apparatus that is actually carrying the rotor head at its free end. It has to be elongated in order to allow the feeding of the rotor head axially into the cavity defining the surface.
  • a pneumatic motor positioned at the free end of the support member with the rotor head mounted directly on the drive shaft of the pneumatic motor.
  • a different version is disclosed in another source (DE-C-4 331 394) where the rotor head is fixedly attached to the end of the support member and is rotating at high operating speed together with the support member relative to the base member.
  • the drive means is an electric drive motor, namely a DC-motor with a reducing gear means.
  • the rotor head in the first prior art document (US-A-5 092 265) has the form of a turbine impeller, whereas the second prior art source (DE-C-4 331 394) has a more cylindrical rotor head with radial openings on the one hand and a bottom with axial openings on the other hand.
  • a rim is protruding inwardly. If the rotor head is operated vertically as disclosed in the prior art document the rim is able to collect residual liquid after the coating phase as been concluded and the rotor head is no longer rotating. However, in a horizontal orientation of the rotor head this rim is useless and residual liquid is dropping from the rotor head when this rotor head is retracted from the cavity.
  • the prior art discloses more than one liquid delivery conduit (US-A-5 092 265) or, for a small size version, particularly adapted to manufacturing processes in the automotive industry, just one liquid delivery conduit (DE-C-4 331 394).
  • the delivery outlet is not only close to but in fact within a hollow chamber in the rotor head (Fig. 2 of DE-C-4 331 394). It depends on the specific liquid material to be applied as well as on the size of the rotor head whether one liquid delivery conduit is sufficient or a number of liquid delivery conduits and/or liquid delivery outlets are useful.
  • the malfunction signal is a signal stopping the rotation of the rotor head and/or a signal generating an alarm signal.
  • the use of a low testing speed brings about an additional advantage that can be achieved even if there is no monitoring of the rotation of the rotor head at the low testing speed. It was found that if the testing speed of the rotor head is appropriately chosen it can be so low that no liquid material on the rotor head is thrown off from the rotor head but can still be so high that residual liquid material on the rotor head will not drop off from the rotor head. So the rotor head can be retracted from the cavity without residual liquid dropping down onto the surface. This is particularly helpful where the rotor head is used with a horizontal orientation of the elongated support member or an orientation with a substantial horizontal component.
  • testing speed depends on viscosity and adherence properties of the liquid towards the surface of the rotor head.
  • This setting element is part of the drive control.
  • the setting element Based on a generally elongated form of the base member it is practical to design the setting element as a mechanical setting ring rotatable relative to the base member. Easy adjustment is combined with reliable positioning if an index catch for each settable value of the operating speed is provided. In a separate, independent version of the invention above mentioned problem is solved by a particularly convenient design of the drive control as far as setting the operating speed of the rotor head is concerned.
  • Claim 17 provides in this regard that the housing of the base member is provided with a sleeve which has an inner surface with optically reflecting and non- reflecting areas.
  • the drive control itself is provided with optoelectronic switches that are positioned inside the sleeve in a way that by rotating the sleeve and the switches relative to each other the switches are selectively activated and deactivated to read the setting of the operating speed. So for reading the setting of the setting ring by the drive control no electromechanical microswitches are used but just a reliable optoelectronic system is applied.
  • Claims 18 to 20 are related to specific embodiments of this optoelectronic reading means.
  • Fig. 1 shows a perspective overall view of a rotorspray according to a preferred embodiment of the invention
  • Fig. 2 shows an axial sectional view of the rotorspray according to Fig. 1
  • Fig. 3 shows a perspective view, the housing partly cut away, of the second housing of the base member shown in Fig. 1,
  • Fig. 4 shows a schematic view of a printed circuit board with optoelectronic switches and corresponding sleeve with reflecting and non-reflecting patches.
  • Fig. 1 shows a perspective view of an apparatus for applying a liquid material to a surrounding surface that defines a cavity like are bore, a drilling, a cylindrical volume or the like.
  • Such apparatus is normally called a rotorspray and so hereafter we will use the term rotorspray as well.
  • the liquid material applied by such an apparatus is usually a liquid like an oil or a resin.
  • a liquid resin base and a liquid catalyst which are mixed simultaneously with their application by means of the rotor head.
  • a further field of application is the coating of the inner surface of the cylinders of an engine block prior to assembly of the engine block with the plungers.
  • the rotorspray shown in Fig. 1 comprises a base member 1 and an elongated support member 2 that extends axially from one end of the base member 1.
  • a rotor head 3 is attached to the free end of the support member 2.
  • At least one liquid delivery conduit 4, in this embodiment exactly one liquid delivery conduit 4, is positioned with its delivery outlet 5 close to and oriented towards the rotor head 3.
  • an end portion 6 which is the portion of the base member 1 that actually carries the support member 2 and the delivery conduit 4.
  • the delivery conduit 4 is directed sideways to an attachment socket 7 where an external liquid supply line (not shown) may be attached.
  • the rotor head 3 of such a rotorspray is adapted to rotate at a high operating speed. This rotation may be relative to he support member 2 (as in the prior art from US-A-5 092 265. In the present embodiment however, the rotor head 3 rotates together with the support member 2 relative to the base member 1. If the operating speed is sufficiently high liquid materials sprayed from the delivery outlet 5 onto the rotor head 3 is thrown generally radially outwards towards a surrounding surface. In order to allow this in the present embodiment the rotor head 3 is provided with a bottom 8 and a ring of small axial openings 9 in the bottom (see Fig. 1 and Fig. 2).
  • the overall length including the support member 2 and the rotor head 3 is between
  • Fig. 1 and Fig. 2 disclose further that the rotor head 3 is adapted to be driven by a drive means 11 (Fig. 2). Its operation and speed is controlled by a drive control 12 (Fig. 2).
  • the drive means 11 is an electric motor and the drive control 12 of course is an electronic control system, the base member 1 is equipped with an electric attachment means and interface 13.
  • the drive control 12 is adapted to control the rotational speed of the rotor head 3 not only to the high operating speed for throwing the liquid towards the surrounding surface, but also to a low testing speed.
  • the drive control 12 is further adapted to monitor the rotation of the rotor head 3 at the low testing speed and to generate a malfunction signal if the rotation of the rotor head 3 is unduly retarded. Braking or blocking of the rotor head 3 leads to generation of the malfunction signal at the low testing speed of the rotor head 3.
  • This malfunction signal may be a signal stopping the rotation of the rotor head 3 completely or a signal that just stops the advance movement of the rotor head 3 and/or it is just a signal initiating an alarm signal of any kind.
  • Rotorsprays are mostly visually controlled by an operator. So the alarm signal could be an optic or acoustic signal. As the testing speed is low compared to the operating speed the rotor head 3 will not be damaged and will not be out-of- balance if it collides with an obstacle within the cavity where the liquid material shall be applied. For detailed explanation reference is made to the introductory part of the present description.
  • the low testing speed of the rotor head 3 can be used to achieve a completely different advantage, too. Dropping of residual liquid from the rotor head 3 when the rotor head 3 stands still after coating of the surface has been terminated, can be prevented at least when the rotor head 3 on the support member 2 is positioned horizontally or at least with a substantial horizontal component by choosing the low testing speed of the rotor head 3 low enough that no liquid material on the rotor head 3 is thrown off from the rotor head 3 but still high enough that no residual liquid material is dropping of the rotor head 3.
  • the operating speed is between 2000 rpm and 12000 rpm, preferably between about 4000 rpm and about 9000 rpm.
  • the testing speed is between about 50 rpm and about 250 rpm, preferably around 100 rpm. It was explained before that the testing speed is largely dependent on the viscosity and adherence properties of the liquid material.
  • the rotorspray of the present embodiment is provided with a further interesting feature.
  • Fig. 1 and 2 as well as Fig. 3 and 4 show that the drive control 12 is provided with a setting element 14 for setting the operating speed to different values.
  • the setting element 14 is a mechanical setting ring rotatable relative to the base member 1.
  • the setting element 14 is provided with an index catch 16 indicated in Fig. 2 for each settable value of the operating speed. So the operating speed is safely maintained and will normally not be changed unintentionally.
  • the prior art proposes a pneumatic drive motor and optionally a reducing gear means for the drive means.
  • a pneumatic drive could be applied, too.
  • the drive means 11 comprises an electric drive motor, preferably a DC-motor, and optionally a reducing gear means.
  • the drive motor of the drive means 11 here is a 24 V DC-motor which is controlled by the drive control 12 by means of a pulse- width-modulation of the power supply.
  • the monitoring of the rotation of the rotor head 3 at the low testing speed by the drive control 12 can be achieved by monitoring the current drawn by the electric drive motor. If the rotor head 3 collides with an obstacle and its rotation is retarded this is reflected by a rise in the current drawn by the drive motor. This is an indirect and very reliable method. However, a direct measurement of the rpm-reading at the low testing speed by optical or tachymetric means is also applicable, but more expensive.
  • the drive control 12 can be equipped with a calibrating function. Following different lengths of the support member 2 and different sizes of the rotor heads 3 - l i ⁇
  • the drive control 12 can be operated in a learning mode where the drive control 12 adapts itself to the specific parameters of the actual rotorspray.
  • the rotor head 3 is fixedly attached to the elongated support member 2.
  • the support member 2 runs on bearings 17 in the base member 1 and is driven by the drive means 11.
  • the base member 1 which houses all components of the base member 1.
  • the base member 1 comprises a first housing 18 which houses only the bearings 17 for the support member 2, and a second housing 19 which houses the drive means 11 and the drive control 12.
  • the second housing 19 can be coupled to and decoupled from the first housing 18 simultaneously coupling or decoupling the drive means 11 to or from the support member 2.
  • Fig. 1 and Fig. 2 show both housings 18, 19 whereas Fig. 3 is a perspective view, partly opened, of the second housing 19 with the drive means 11 and the drive control 12, the electric interface 13, setting element 14 and scale 15.
  • Fig. 1 shows the liquid delivery conduit 4 fixedly attached to the end portion 6 of the base member 1 and extending therefrom in parallel to the support member 2 towards and with the delivery outlet 5 into the rotor head 3.
  • the drive control 12 is positioned within the second housing 19 of the base member 1.
  • the second housing 19 is provided with a mechanical setting ring 14 as a setting element rotatable relative to the housing 19 for setting the operating speed of the rotor head 3 to different values.
  • the housing 19 is provided with a sleeve 20.
  • this sleeve 20 is a stationary part of the housing 19 and the scale 15 is printed onto the outside of the sleeve 20.
  • the sleeve 20 forms the outer cylindrical wall of the second housing 19.
  • the inner surface of the sleeve 20 is provided with optically reflecting and non- reflecting areas.
  • the drive control 12 is provided with optoelectronic switches 21.
  • an optically reflecting area 22 is indicated by way of an example.
  • Fig. 3 shows altogether four optoelectronic switches 21,
  • Fig. 4 shows just those switches 21 with a section of the sleeve 20.
  • the drive control 12 has the switches 21 positioned within the sleeve 20 in a way that by rotating the sleeve 20 and the switches 21 relative to each other the switches 21 are selectively activated and deactivated.
  • Fig. 4 indicates this by the arrows.
  • the first, third and fourth (from left to right) switch 21 is deactivated, the second switch 21 is activated, because the light emitted by the LED of this switch is reflected by the area 22 and received by the photo diode or photo transistor of this switch 21.
  • the optoelectronic switches 21 may have any appropriate design and may use any appropriate wavelength between far infrared and far ultraviolet. However, as a matter of convenience a normal LED-may be used as the sender of the switch, e. g. with red light emitted by this LED.
  • the drive control 12 comprises a printed circuit board 23 or the like and the optoelectronic switches 21 are positioned on the board.
  • the advantage of this construction is that all further electronic components 24 of the drive control 12 including a microprocessor, integrated circuits etc. can be positioned on the circuit board 23 as well and replacement of a defect circuit board 23 will be easier and more convenient.
  • the setting ring 14 is connected to the switches 21 so that the switches 21 are rotated relative to the sleeve 20, because the sleeve 20 is, as was said before, stationary with respect to the other parts of the base member 1.
  • an inverse positioning could be provided, too.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

L'invention concerne un appareil permettant d'appliquer un matériau liquide sur une surface adjacente, de préférence une surface définissant une cavité ou un alésage, et comprenant un élément de base (1), un élément support allongé (2) s'étendant de manière axiale d'une extrémité de l'élément de base (1), une tête de rotor (3) fixée sur l'autre extrémité de l'élément support (2) et au moins un conduit d'administration de liquide (4) positionné de manière que l'évacuation d'administration (5) de celui-ci soit proche de la tête de rotor (3) et orientée en direction de celle-ci (3). La tête de rotor (3) est conçue pour tourner à une vitesse de fonctionnement élevée et pour diriger le matériau liquide pulvérisé à partir de l'évacuation d'administration (5) sur la tête de rotor (3) généralement vers l'extérieur de manière radiale en direction d'une surface adjacente. La tête de rotor (3) est entraînée grâce à des moyens d'entraînement (11) et le fonctionnement et la vitesse de celle-ci sont commandés au moyen d'une commande d'entraînement (12). Cet appareil présente des améliorations : la commande d'entraînement (12) est conçue pour commander la vitesse rotative de la tête de rotor (3) également à une faible vitesse de test, pour surveiller la rotation de la tête de rotor (3) à la faible vitesse de test et pour produire un signal de mauvais fonctionnement si la rotation de la tête de rotor (3) est retardée irrégulièrement.
PCT/EP2005/007488 2005-07-11 2005-07-11 Pulverisateur de rotor et procede de mise en oeuvre de celui-ci Ceased WO2007006325A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2005/007488 WO2007006325A1 (fr) 2005-07-11 2005-07-11 Pulverisateur de rotor et procede de mise en oeuvre de celui-ci

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2005/007488 WO2007006325A1 (fr) 2005-07-11 2005-07-11 Pulverisateur de rotor et procede de mise en oeuvre de celui-ci

Publications (1)

Publication Number Publication Date
WO2007006325A1 true WO2007006325A1 (fr) 2007-01-18

Family

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Family Applications (1)

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PCT/EP2005/007488 Ceased WO2007006325A1 (fr) 2005-07-11 2005-07-11 Pulverisateur de rotor et procede de mise en oeuvre de celui-ci

Country Status (1)

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WO (1) WO2007006325A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007033892A1 (de) * 2007-07-20 2009-01-22 Dürr Systems GmbH Verfahren zur Prozessdiagnose und Rotationszerstäuberanordnung
CN108940628A (zh) * 2018-09-30 2018-12-07 科澳特石油工程技术有限公司 一种管道内喷漆装置
US10960425B2 (en) 2019-03-05 2021-03-30 G.P. Reeves Inc. Mechanism for delivering highly viscous materials for coating an interior surface of a tubular substrate
EP4066944A1 (fr) 2021-03-31 2022-10-05 D + P Dosier & Prüftechnik GmbH Dispositif d'application d'un milieu liquide ou pâteux, en particulier d'un lubrifiant

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5092265A (en) * 1989-10-23 1992-03-03 Hughes J David Apparatus for applying resin coatings
DE4331394A1 (de) * 1993-09-15 1995-03-16 Drei Bond Gmbh Vorrichtung zur Innenbeschichtung von Bohrungen und sonstigen Ausnehmungen
US5452853A (en) * 1994-05-04 1995-09-26 Action Products Marketing Corporation Method and apparatus for spraying grout onto the interior surface of an enclosed elongated cavity
US5938849A (en) * 1998-07-31 1999-08-17 Watts; Kenneth J. Cement Lining slinger head tachometer assembly
WO2004112972A1 (fr) * 2003-06-16 2004-12-29 Hunting Industrial Coatings Ltd Appareil de distribution

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5092265A (en) * 1989-10-23 1992-03-03 Hughes J David Apparatus for applying resin coatings
DE4331394A1 (de) * 1993-09-15 1995-03-16 Drei Bond Gmbh Vorrichtung zur Innenbeschichtung von Bohrungen und sonstigen Ausnehmungen
US5452853A (en) * 1994-05-04 1995-09-26 Action Products Marketing Corporation Method and apparatus for spraying grout onto the interior surface of an enclosed elongated cavity
US5938849A (en) * 1998-07-31 1999-08-17 Watts; Kenneth J. Cement Lining slinger head tachometer assembly
WO2004112972A1 (fr) * 2003-06-16 2004-12-29 Hunting Industrial Coatings Ltd Appareil de distribution

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007033892A1 (de) * 2007-07-20 2009-01-22 Dürr Systems GmbH Verfahren zur Prozessdiagnose und Rotationszerstäuberanordnung
CN101754816B (zh) * 2007-07-20 2014-01-01 杜尔系统有限责任公司 用于过程诊断的方法和旋转式雾化器装置
US9016596B2 (en) 2007-07-20 2015-04-28 Durr Systems Gmbh Method for process diagnosis and rotary atomizer arrangement
EP2178648B1 (fr) * 2007-07-20 2016-09-14 Dürr Systems GmbH Procédé de diagnostic de processus et dispositif d'atomisation rotatif
CN108940628A (zh) * 2018-09-30 2018-12-07 科澳特石油工程技术有限公司 一种管道内喷漆装置
US10960425B2 (en) 2019-03-05 2021-03-30 G.P. Reeves Inc. Mechanism for delivering highly viscous materials for coating an interior surface of a tubular substrate
EP4066944A1 (fr) 2021-03-31 2022-10-05 D + P Dosier & Prüftechnik GmbH Dispositif d'application d'un milieu liquide ou pâteux, en particulier d'un lubrifiant

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