EP1967281B1 - Tube de pompage et dispositif de pompage - Google Patents

Tube de pompage et dispositif de pompage Download PDF

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Publication number
EP1967281B1
EP1967281B1 EP20070405070 EP07405070A EP1967281B1 EP 1967281 B1 EP1967281 B1 EP 1967281B1 EP 20070405070 EP20070405070 EP 20070405070 EP 07405070 A EP07405070 A EP 07405070A EP 1967281 B1 EP1967281 B1 EP 1967281B1
Authority
EP
European Patent Office
Prior art keywords
hose
inlet
delivery
conveying chamber
outlet
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.)
Not-in-force
Application number
EP20070405070
Other languages
German (de)
English (en)
Other versions
EP1967281A1 (fr
Inventor
René Schmid
Daniel Ziwica
Karsten Jüterbock
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.)
J Wagner AG
Original Assignee
J Wagner 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 J Wagner AG filed Critical J Wagner AG
Priority to EP20070405070 priority Critical patent/EP1967281B1/fr
Priority to US12/041,719 priority patent/US8201579B2/en
Publication of EP1967281A1 publication Critical patent/EP1967281A1/fr
Application granted granted Critical
Publication of EP1967281B1 publication Critical patent/EP1967281B1/fr
Not-in-force 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
    • B05B7/1459—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures

Definitions

  • the invention relates to a delivery chamber hose for a device for conveying fluid and a device for conveying fluid with the delivery chamber hose.
  • the fluid may be, for example, coating powder.
  • the coating powder or powder for a short time from a powder reservoir by means of a powder delivery device is transported to a powder spray gun and sprayed there with the powder spray gun on the workpiece.
  • the powder coating powder can also be transported from the powder reservoir in a metering and from there with several individual pumps to the powder spray guns.
  • a device for conveying coating powder and a method for conveying powder with the conveyor device are known.
  • the conveying device has an inlet valve, an outlet valve and a delivery chamber formed from an elastic delivery chamber tube.
  • the powder conveying chamber is arranged between the inlet valve and the outlet valve and has a conveying air inlet.
  • the volume of the powder delivery chamber is variable by a deformation of the delivery hose.
  • An object of the invention is to provide a delivery chamber hose for a device for conveying fluid, in which it is ensured that the fluid located in the delivery chamber hose is completely transportable out of the delivery chamber hose. With the help of the delivery chamber hose the material transport should be optimized.
  • Another object is to provide a device for conveying fluid with the delivery chamber tube, which also ensures that the fluid in the delivery chamber tube is completely transported out.
  • a delivery chamber hose for a device for conveying fluid having the features according to claim 1.
  • the delivery chamber hose according to the invention for a device for conveying fluid is elastic, has an inlet and an outlet and in the region of the inlet the smallest resistance.
  • the device according to the invention for conveying fluid comprises a delivery chamber tube which is elastically formed, which has an inlet and an outlet, and which has the smallest resistance in the region of the inlet.
  • the device comprises an inlet valve and an outlet valve, wherein the inlet valve and the outlet valve are controllable.
  • the delivery chamber tube forms a delivery chamber, which is arranged between the inlet valve and the outlet valve, which has a delivery air inlet, and whose volume is variable by a deformation of the delivery chamber tube.
  • the tube has a taper in the region of the inlet. This is advantageously easy to produce.
  • one or more further tapers are provided in the region of the inlet. This ensures that the delivery chamber hose rests in the relaxed state on the inside of the housing in a defined position. As a result, therefore, the delivery chamber of the delivery chamber tube each time when the delivery chamber tube returns to the relaxed state, the original volume again.
  • a recess is provided in the hose, which is smaller from the inlet to the outlet.
  • the delivery chamber tube rests in the relaxed state on the inside of the housing in a defined position.
  • the delivery chamber of the delivery chamber tube thus has the original volume each time the delivery tube returns to the relaxed state.
  • the thickness of at least one of the layers increases from the inlet to the outlet. This supports the complete emptying or pushing out of the powder from the delivery chamber hose.
  • the wall thickness in the delivery chamber hose according to the invention increases from the inlet to the outlet.
  • the delivery chamber tube according to the invention may also have a reinforcement.
  • the reinforcement is preferably arranged in the middle region and in the region of the outlet.
  • the cross section of the delivery chamber tube may also be oval.
  • the inner diameter of the delivery chamber tube can decrease from the inlet to the outlet.
  • a further delivery chamber formed from a further delivery chamber tube can be provided, which is arranged between a further inlet valve and a further outlet valve.
  • the delivery chamber has a delivery air inlet and its volume is variable by a deformation of the further delivery chamber tube.
  • the outlet valves are connected together on the output side.
  • the inlets of the two inlet valves can also be connected to each other.
  • FIG. 1 a three-dimensional view of a possible embodiment of the device according to the invention for conveying fluid.
  • FIG. 2 is this embodiment the conveyor shown in an exploded view.
  • the conveying device which is also referred to as a pump
  • fluid for example powdered coating material for coating workpieces
  • the conveyor device is connected on the input side via a hose nipple 14 with a suction line to suck powder from a powder reservoir.
  • the conveyor is connected via a hose nipple 10 with a transport line to transport the powder to a dosing or a powder spray gun.
  • the powder reservoir, the suction line, the transport line and the dosing or the powder spray gun are in the Figures 1 and 2 Not shown. If the conveying device according to the invention conveys the powder from the powder storage container to the metering container, further pumps are normally provided in order subsequently to transport the powder from the metering container to the individual powder spray guns.
  • the in the Figures 1 and 2 shown embodiment of the conveying device has two independently operable conveyor units. Both conveyor units are arranged side by side in parallel.
  • the first conveying unit comprises a conveying chamber hose 2 arranged in a housing 1.1 (see FIG FIG. 2 ).
  • the housing 1.1 has a housing cover 1.5 on the input side and a housing cover 1.3 on the output side.
  • the two housing covers 1.5 and 1.3 have a preferably oval opening into which the delivery hose 2 protrudes.
  • the second conveyor unit is identical to the first conveyor unit. It comprises a housing 1.2, in which a further delivery chamber hose 3 is arranged.
  • the housing 1.2 has a housing cover 1.6 on the input side and a housing cover 1.4 on the output side.
  • the two tubes 2 and 3 are fixed on the input side.
  • On the outlet side of the two conveyor units is another flange 4, with which the two tubes 2 and 3 are fixed on the outlet side.
  • the two flanges 4 and 11 are screwed by screws 5 with the housing covers 1.3, 1.4 or 1.5 and 1.6.
  • the arranged on the inlet side of the two conveyor units flange 11 has a conveying air connection 19 for the first conveyor unit and a conveying air connection 20 for the second conveyor unit.
  • the two conveying air connections 19 and 20 can each be equipped with a check valve.
  • a Y-piece 13 is arranged between the hose nipple 14, with which the leading to the powder reservoir tubing is connectable, and the flange 11, a Y-piece 13 is arranged. With the aid of the Y-piece, the powder, which is sucked out of the powder storage container via the suction line, is evenly distributed to the two downstream delivery units.
  • Each of the two conveyor units each has an inlet valve.
  • the inlet valve for the first delivery unit can be controlled via a control connection 21.
  • the second delivery unit also has on the input side an inlet valve which can be controlled via a control connection 22.
  • the two inlet valves are housed in a common housing 12.
  • the first delivery unit On the output side, the first delivery unit has an outlet valve, which can be controlled via a control connection 23.
  • the second delivery unit also has an outlet valve on the output side, which can be controlled via a control connection 24. Both exhaust valves are housed in a common housing 6.
  • Both the two intake valves and the two exhaust valves are in the in Figures 1 and 2 shown embodiment designed as hose valves.
  • FIG. 2 In the exploded view in FIG. 2 is to illustrate the exhaust valve, the valve tube 7 once in the inserted state and once shown in the removed state. If the exhaust valve is acted upon by the control line 24 with compressed air, the valve tube 7 is compressed. With the aid of compressed air DL, the cross-section of the valve tube can be reduced so far that no fluid can flow through the valve. The same applies mutatis mutandis to the other exhaust valve and the two intake valves.
  • the outlets of the two exhaust valves are merged and open into a common powder outlet, which is connectable via the hose nipple 10 with the transport line.
  • the Y-piece 8 and the two exhaust valves are fastened to the flange 4 with a plurality of screws 9.
  • the Y-piece 13 and the two inlet valves are fastened to the flange 11 with a plurality of screws.
  • the housing 1.1 has a compressed air connection 15, via which compressed air DL flow into the interior of the housing can.
  • the compressed air DL causes the compressed air chamber, which is located between the inside of the housing and the delivery chamber 2, expands and thus the delivery chamber 2 hose is compressed. This in turn causes the volume in the delivery chamber tube 2 decreases.
  • a negative pressure can be generated in the housing 1.1 by drawing air from the compressed air chamber.
  • the negative pressure Vak ensures that the delivery chamber hose 2 is repeatedly brought into the same defined starting position.
  • it can be achieved with the help of the negative pressure Vak that compressed by the compressed air DL delivery hose 2 expands faster again.
  • a compressed air connection 17 is provided on the housing 1.2 in order to allow compressed air to flow into the housing 1.2.
  • the housing 1.2 has a connection 18 which can be connected to a vacuum source.
  • the conveyor works as follows. First, the inlet valve of the first delivery unit is closed and the outlet valve of the first delivery unit is opened. Then the delivery chamber hose 2 of the first delivery unit is compressed by means of compressed air DL, so that the volume in the delivery chamber 40.1 is reduced. Subsequently, first the outlet valve of the first delivery unit is closed and then the inlet valve of the first delivery unit is opened and it is ensured that the delivery chamber hose 2 can expand again. In this way, powder is sucked into the delivery chamber 40.1. Then the inlet valve of the first conveyor unit is closed again and the outlet valve of the first conveyor unit is opened. Will now via the port 19 conveying air blown into the delivery chamber 40.1 of the delivery hose 2, the powder is conveyed out of the delivery chamber 40.1.
  • the second conveyor unit works on the same principle.
  • the two conveyor units are operated so that while the one feed unit sucks powder from the powder reservoir, the other conveyor unit transports the powder in the direction of Pulversprühpistole. So while one delivery hose is compressed, the other delivery hose expands.
  • the two housing parts 1.1 and 1.2 may be tubes with a square or rectangular cross-section.
  • the openings in the housing covers 1.3, 1.4, 1.5 and 1.6 can, as in FIG. 2 shown to be oval. This ensures that the delivery hose is compressed evenly in a plane parallel and again the same deformation of the delivery hose occurs at each working cycle.
  • FIG. 3 is a first possible embodiment of the delivery chamber tube, which is also referred to as a delivery hose, shown in a three-dimensional view.
  • the jacket 34 of the delivery chamber tube has a taper 33. If the delivery chamber hose is pressurized with compressed air, first the part of the delivery chamber hose is compressed at which the resistance of the delivery hose is the smallest. At the in FIGS. 3 and 4 In the embodiment shown, this is the region 33 in which the taper is located. Only then is the remaining part of the delivery hose pressed together. In this way, it is thus achieved that the delivery hose is always compressed first on the inlet side 31 and only then in the middle and on the outlet side 32.
  • this ensures that the powder or fluid present in the delivery hose 2 is transported out of the delivery hose first in the region of the inlet 31, then in the middle region and then in the region of the outlet 32. If, on the other hand, the conveying hose were compressed first in the middle and then at the inlet 31, this could lead to the powder not being transported completely out of the conveying hose. In addition, it might happen that the powder is pushed back to the inlet side 31.
  • resistance is meant the mechanical resistance or the mechanical moment of resistance. The smaller the resistance of the material, the smaller the rigidity of the material.
  • an arrow 30 may be applied to the conveying direction on the delivery hose.
  • FIG. 5 a second embodiment of the delivery hose is shown in side view.
  • the delivery hose according to FIG. 5 in the area of intake four tapers 35.1 to 35.4 on. This also ensures that the delivery hose in the region of the inlet 31 has the smallest resistance.
  • FIG. 6 a third possible embodiment of the delivery hose is shown in side view.
  • the reduction of the resistance in the region of the inlet 31 is achieved in that on the lateral surface 34 of the tube recesses 36.1 and 36.2 are arranged, which are largest in the region of the inlet 31 and in the region of the outlet 32 smallest.
  • FIG. 7 a fourth embodiment of the delivery hose is shown in cross section.
  • the delivery hose is constructed from two layers 34 and 37, the layer 37 having the smallest wall thickness in the region of the inlet 31 and the greatest wall thickness in the region of the outlet. This also ensures that the delivery hose in the region of the inlet 31 has a smaller resistance than in the region of the outlet 32.
  • the layer 34 may have the greatest wall thickness in the region of the inlet 31 and the smallest wall thickness in the region of the outlet 32. If the material of the layer 34 has a smaller resistance than the material of the layer 37, an overall smaller resistance is again achieved in the region of the inlet 31 than in the region of the outlet 32.
  • FIG. 8 a fifth embodiment of the delivery hose is shown in cross-section.
  • reinforcements 38.1 and 38.2 are incorporated in the delivery hose in the middle region and in the end region. This also ensures that the delivery hose has a smaller resistance in the region of the inlet 31 than in the region of the outlet 32.
  • reinforcements 38.1 and 38.2 can serve as wires or fibers. Instead, a serving as a reinforcing Mesh or mesh incorporated into the delivery hose or applied to the delivery hose.
  • FIG. 9 A sixth embodiment of the delivery hose is in FIG. 9 shown in cross section.
  • the wall thickness x1 remains constant over the length of the delivery hose.
  • the inner diameter d1 in the region of the inlet 31 is greater than the inner diameter d2 in the region of the outlet 32. This results in a delivery hose with a conically extending delivery chamber 40 and a reduced resistance in the region of the inlet 31.
  • FIG. 10 a seventh embodiment of the delivery hose is shown in cross-section.
  • the wall thickness x1 in the region of the inlet 31 is smaller than the wall thickness x2 in the region of the outlet 32.
  • the inner diameter d1 of the delivery hose is constant. Due to the smaller wall thickness in the region of the inlet 31, it is achieved that the delivery hose has a smaller resistance in the region of the inlet 31 than in the region of the outlet 32 and thus is compressed first in the inlet region, then in the middle and finally in the outlet region.
  • the conicity can in the in the FIGS. 9 and 10 shown embodiments, for example, at 0.5 °.

Landscapes

  • Air Transport Of Granular Materials (AREA)

Claims (11)

  1. Dispositif pour le transport d'un fluide,
    - avec une soupape d'admission (12) et une soupape d'évacuation (6), dans lequel la soupape d'admission (12) et la soupape d'évacuation (6) peuvent être commandées,
    - avec un tube élastique de chambre de transport (2) comportant une admission (31) et une évacuation (32) et présentant la plus faible résistance à la déformation dans la région de l'admission (31),
    - avec une chambre de transport (40.1) formée à partir du tube de chambre de transport (2),
    -- agencée entre la soupape d'admission (12) et la soupape d'évacuation (6),
    -- comportant une admission d'air de transport (19), et
    -- dont le volume peut être modifié par une déformation du tube de chambre de transport (2).
  2. Dispositif selon la revendication 1,
    dans lequel le tube de chambre de transport (2) comporte un rétrécissement (33) dans la région de l'admission (31).
  3. Dispositif selon la revendication 1 ou 2,
    dans lequel le tube de chambre de transport (2) comporte un ou plusieurs rétrécissement supplémentaires (35.2 - 35.4) dans la région de l'admission (31).
  4. Dispositif selon l'une des revendications précédentes,
    dans lequel le tube de chambre de transport (2) comporte un évidement (36.1; 36.2) rétrécissant de l'admission (31) à l'évacuation (32).
  5. Dispositif selon l'une des revendications précédentes
    dans lequel le tube de chambre de transport (2) comporte plusieurs couches (34, 37), où au moins l'une des couches (37) s'épaissit de l'admission (31) à l'évacuation (32).
  6. Dispositif selon l'une des revendications précédentes,
    dans lequel l'épaisseur de paroi (x1, x2) du tube de chambre de transport (2) augmente de l'admission (31) à l'évacuation (32).
  7. Dispositif selon l'une des revendications précédentes,
    dans lequel le tube de chambre de transport (2) comporte un renforcement (38.1).
  8. Dispositif selon l'une des revendications précédentes,
    dans lequel la section transversale du tube de chambre de transport (2) est ovale.
  9. Dispositif selon l'une des revendications précédentes,
    dans lequel le diamètre intérieur (d1, d2) du tube de chambre de transport (2) diminue de l'admission (31) à l'évacuation (32).
  10. Dispositif selon l'une des revendications précédentes,
    - avec une chambre de transport supplémentaire (40.2) formée à partir d'un tube de chambre de transport (3) supplémentaire,
    -- agencée entre une soupape d'admission supplémentaire (12) et une soupape d'évacuation supplémentaire (6),
    -- comportant une admission d'air de transport (20),
    ---- dont le volume peut être modifié par une déformation du tube de chambre de transport (3) supplémentaire, et
    -- dans lequel les soupapes d'évacuation (6) sont reliées l'une à l'autre côté sortie.
  11. Utilisation du dispositif selon l'une des revendications précédentes, pour le transport d'une poudre destinée au revêtement de pièces usinées.
EP20070405070 2007-03-05 2007-03-05 Tube de pompage et dispositif de pompage Not-in-force EP1967281B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20070405070 EP1967281B1 (fr) 2007-03-05 2007-03-05 Tube de pompage et dispositif de pompage
US12/041,719 US8201579B2 (en) 2007-03-05 2008-03-04 Conveying chamber hose for a device for conveying fluid and a device for conveying fluid with the conveying chamber hose

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20070405070 EP1967281B1 (fr) 2007-03-05 2007-03-05 Tube de pompage et dispositif de pompage

Publications (2)

Publication Number Publication Date
EP1967281A1 EP1967281A1 (fr) 2008-09-10
EP1967281B1 true EP1967281B1 (fr) 2013-01-02

Family

ID=37965123

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070405070 Not-in-force EP1967281B1 (fr) 2007-03-05 2007-03-05 Tube de pompage et dispositif de pompage

Country Status (2)

Country Link
US (1) US8201579B2 (fr)
EP (1) EP1967281B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011004035A1 (de) * 2011-02-14 2012-08-16 Illinois Tool Works Inc. Pulverpumpe zum Fördern von Beschichtungspulver
DE102011052432A1 (de) * 2011-04-15 2012-10-18 Reinhausen Plasma Gmbh Membranpumpe und Verfahren zum Fördern von feinkörnigen Pulvern mit Hilfe einer Membranpumpe
US8997793B2 (en) 2011-06-15 2015-04-07 U.S. Farathane Corporation Flexible conduit for use in fresh air intake and gas vapor outlet incorporated into a vehicle fuel tank to eliminate whistling within the conduit
US20140261739A1 (en) 2013-03-15 2014-09-18 Nordson Corporation Dense phase pump with easily replaceable components

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5531083U (fr) * 1978-08-23 1980-02-28
US4523738A (en) * 1982-03-05 1985-06-18 Red Valve Co. Inc. Deformable sleeve for a pinch valve
US6505810B2 (en) * 2000-06-22 2003-01-14 Red Valve Co Inc Pinch valve arrangement for flow control
US6607010B1 (en) * 2001-05-10 2003-08-19 Southeastern Universities Res. Assn, Inc. Flexible collapse-resistant and length-stable vaccum hose
WO2004087331A1 (fr) * 2002-10-14 2004-10-14 H. Börger & Co. GmbH Procede et dispositif de transport d'une matiere pulverulente
DE10353968A1 (de) * 2003-11-19 2005-07-07 Itw Gema Ag Beschichtungspulver-Fördervorrichtung und -Förderverfahren
DE102005006522B3 (de) * 2005-02-11 2006-08-03 J. Wagner Ag Vorrichtung zum Fördern von Beschichtungspulver und Verfahren zum Fördern von Pulver mit der Fördervorrichtung

Also Published As

Publication number Publication date
EP1967281A1 (fr) 2008-09-10
US8201579B2 (en) 2012-06-19
US20080219780A1 (en) 2008-09-11

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