EP2134475B1 - Vorrichtung zum aufsprühen von pigmentierten flüssigkeiten - Google Patents

Vorrichtung zum aufsprühen von pigmentierten flüssigkeiten Download PDF

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Publication number
EP2134475B1
EP2134475B1 EP08734896A EP08734896A EP2134475B1 EP 2134475 B1 EP2134475 B1 EP 2134475B1 EP 08734896 A EP08734896 A EP 08734896A EP 08734896 A EP08734896 A EP 08734896A EP 2134475 B1 EP2134475 B1 EP 2134475B1
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EP
European Patent Office
Prior art keywords
needle
liquid
nozzle
compressed air
sealing element
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
EP08734896A
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German (de)
English (en)
French (fr)
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EP2134475A1 (de
Inventor
Bernd Kriesmair
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Individual
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Individual
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Priority to PL08734896T priority Critical patent/PL2134475T3/pl
Publication of EP2134475A1 publication Critical patent/EP2134475A1/de
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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
    • 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
    • B05B7/24—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2408—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the container or its attachment means to the spray apparatus
    • 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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
    • 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
    • B05B7/24—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2435—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle the carried liquid and the main stream of atomising fluid being brought together by parallel conduits placed one inside the other
    • 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
    • B05B7/24—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2478—Gun with a container which, in normal use, is located above the gun
    • 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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
    • B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
    • 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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
    • B05B7/1209—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means for each liquid or other fluent material being manual and interdependent

Definitions

  • the invention is directed to a device for spraying pigmented liquids by means of an air stream comprising a base body, a arranged at the front of the body spray nozzle with a centrally disposed therein needle, a compressed air inlet and a subsequent compressed air channel, a discharge opening for a pigmented liquid, wherein passed through the compressed air duct controllable compressed air flow at the outlet opening for the pigmented liquid and loaded with liquid droplets and these liquid droplets are discharged through the spray nozzle as long as the compressed air flow is sufrechterbalten, the nozzle and the needle are arranged in a nozzle head and the nozzle head as a whole removable or exchangeable.
  • the pigmented liquid is supplied from an external storage container via an inlet opening.
  • the externally supplied liquid is passed on the way from the inlet opening to the spray nozzle through a space provided in the nozzle head, which may also be referred to as a receiving space. Operation without external fluid supply is not provided.
  • the invention has the object, a device of the generic type in such a way that the handling is even more simplified
  • a reservoir for the pigmented liquid to be sprayed is arranged in the nozzle head.
  • a receiving space for receiving the lovedspühenden pigmented liquid is formed so that the nozzle head is equipped with an integrated liquid tank and the device can be operated independently of an external liquid supply.
  • the reservoir can then be purchased already filled with the nozzle carrier or individually filled or refilled.
  • a filling opening connected to the reservoir is provided, which is covered by a slotted membrane, which may preferably consist of silicone.
  • the reservoir can be arranged around the needle.
  • the reservoir has a hollow cylindrical basic shape with a tapered and the outlet opening forming the front end portion and a rear End area on.
  • a sealing element is inserted into the reservoir in the rear end region.
  • the genamten two end portions are arranged with respect to the axial direction, ie the direction defined by the longitudinal center axis of the needle direction, front or rear.
  • the rear seal via the sealing element, which consists in particular of Teflon.
  • the front seal is made in particular by the fact that the needle in its rest position, ie in the non-actuated state, closes the outlet opening. It can be pressed into a tapered seat of the outlet opening and / or even close fitting in this seat.
  • the sealing element sealingly abuts against an inner wall of the storage container.
  • the sealing element also has a through opening through which the needle is guided axially movable, wherein a contact between the sealing element and the needle within the passage opening is tight sealing.
  • the sealing element is inserted in particular by means of a press fit in the reservoir.
  • Also between the needle and the sealing member is preferably a kind of interference fit, but the contact force is advantageously less than between the sealing member and the inner wall of the reservoir, as the needle should be able to move back and forth within the passage opening.
  • a contact force between the sealing element and the guided through the sealing element needle is designed so that a relative position between the sealing element and the needle is maintained without external force.
  • an external force in this case is to be understood in particular the force by the actuating plunger of the Aufsprühvorraum.
  • a passage diameter of the passage opening of the sealing member is about 1% to about 5%, preferably about 2%, smaller than a needle diameter of the needle in the area which is in the mounted state within the passage opening.
  • an additional spring is provided which presses the needle in the seat of the outlet opening and thus prevents the outlet opening is accidentally released and it is then undesirable Leakage of the pigmented liquid in the reservoir comes.
  • the needle is mechanically fixed at its rear end, but releasably connected to an actuating tappet.
  • connection between the rear end of the needle and the actuating plunger is realized by means of a positive connection.
  • a kind of releasable bayonet lock is provided between the rear end of the needle and the actuating tappet.
  • a generic device has an elongated, pin-like in the hand-durable base body 1, at the front end of a color-guiding nozzle part 2 is arranged.
  • the ink-carrying nozzle part 2 comprises a conical nozzle hoods 3 with a passage and guide bore 4 for a nozzle 5, a safety hood 6 engaging over the nozzle hood 3 and an annular body 7.
  • the annular body 7 has an annular circumferential groove 8, in which a guide collar 9 of the base body 1 engages, so that the annular body 7 is mounted pivotably through 360 °.
  • a nozzle carrier 10 which forms a nozzle head is furthermore arranged, from which a nozzle tube 11 extends, at the front end of which the nozzle 5 is formed.
  • a needle 12 Inside the nozzle tube 11 sits a needle 12, which is acted upon by a coil spring 13.
  • the coil spring 13 and the needle 12 are arranged in a longitudinal bore 14 of the nozzle carrier 10, wherein in this longitudinal bore 14 a, as described below, longitudinally displaceable actuating tappet 15 acts.
  • the nozzle carrier 10 has a substantially round outer shape and is positively inserted into the annular body 7, wherein a lateral projection 16 of the nozzle carrier 10 in a - not visible in the drawing - slot of the annular body 7 engages and is fixed relative to the annular body 7 rotatably , which in turn but is rotatable relative to the base body 1.
  • a color inlet 17 is formed in the form of a recess, wherein in the paint inlet 17, either a connecting hose can be used to a paint reservoir or the insertion of a small, directly attachable paint reservoir.
  • the annular body 7 has an external thread 18, onto which the internal thread 19 of the securing hood 6 can be screwed.
  • the nozzle hood 3 can be attached to the ring body 7 via the securing hood 6, wherein at the same time the nozzle carrier 10, which sits in the frontal recess of the base body 1, is axially fixed.
  • the ink-carrying nozzle part 2 is rotatable relative to the main body 1 as a whole and the nozzle carrier 10 with the ink inlet 17, the nozzle 5, the nozzle needle 12 and the coil spring 13 are interchangeable, so that no ink-carrying part remains and when inserting a new nozzle carrier 10 can be easily continued with a new color.
  • the rear end of the nozzle needle 12 is connected to the coil spring 13, whereas the front end of the coil spring 13 is supported on the narrowing nozzle 5, so that upon movement of the actuating plunger 15 forward the coil spring 13 is compressed and during a backward movement of the actuating plunger 15th the coil spring 13, the nozzle needle 12 with withdraws.
  • the actuating plunger 15 is connected via its inner end 20 with a pivotable about a pivot axis 21, operable in the direction of arrow P operating lever H, the displacement against the force of a return spring 22 in the direction of arrow P causes the actuating plunger 15 to the right or moved rearward, so that the coil spring 13, the needle 12 can shift to the right in the drawing, whereby with increasing movement to the right or rear, the passage opening of the nozzle 5 is increasingly increased and, accordingly, more color can be delivered.
  • an air inlet 23 is provided at the rear end of the main body 1.
  • an air channel 24 connects from the inside to a hose-like, flexible material. Slanted to the air duct 24 extends a guide 25 for a provided with a knurled surface thumb wheel 26 which engages the compressed air channel 24 and further opens by displacement to the front and closes by displacement to the rear, so that the compressed air passage can be adjusted in this way.
  • the compressed air channel 24 opens into the conically tapering nozzle hood 3, wherein the air flow is accelerated and flows past the nozzle 5 and due to the negative pressure built up by the Venturi effect entrains the ink from a color channel 27 adjoining the ink inlet 17, so that through the nozzle 5, a color-air mixture flows out.
  • the compressed air structure can be done for example by means of a compressor.
  • the working pressure is a maximum of 3 bar.
  • the air passage 24 passes by the operating lever H and is squeezed at 28 when the operating lever H is in the front closing state.
  • displacing the operating lever H direction of the arrow P is then, as already described, by displacing the needle to the rear of the nozzle 5 released and at the same time the compressed air channel 24 is opened.
  • the path of the actuating lever H can be limited or adjusted by a knurled nut 29 to a constant over a longer period Maintain spray bar strength upright.
  • the knurled nut 29 is seated on a threaded rod 30, which is displaced axially by a rotational movement of the knurled nut 29 and thus forms an adjustable stop for the actuating lever H.
  • the pigmented liquid is supplied via a paint inlet 17 from the outside.
  • a replaceable nozzle head 10a in which a needle 12a and a coil spring 13a are arranged directly within a substantially hollow cylindrical reservoir 31 for the pigmented liquid to be sprayed.
  • the reservoir 31 runs conically at a front axial end and has there an outlet opening 32, the inner wall of which also forms a forwardly tapered seat 32a.
  • the needle 12a tapers at its front end and terminates in a needle point 12b, by means of which it passes through the outlet opening 32.
  • the needle tip 12b is located in the in Fig. 2 shown rest position of the needle 12 a tightly against a liquid leakage and sealing in the seat 32 a.
  • the inner wall of the seat 32a and the outer contour of the needle tip 12b are fitted together. In particular, they each have the same conicity, ie the same angle of inclination with respect to the central longitudinal axis 36 of the needle 12a or the spraying device as a whole.
  • a nozzle head air passage 24 a In the region of the outlet opening 32 ends on the outside of the front conically tapered reservoir 31, a nozzle head air passage 24 a, with the in Fig. 1 shown compressed air channel 24 is in communication.
  • the nozzle head air duct 24a extends between the reservoir 31 and an outer nozzle cap 37 of the replaceable nozzle head 10a.
  • a sealing element in the form of a Teflon seal 33 is inserted into the storage container 31 by means of a press fit sealing against a liquid outlet.
  • the Teflon seal 33 has a central through-hole 33a through which the needle 12a is passed.
  • the guidance of the needle 12a within the through hole 33a is designed so that on the one hand an axial reciprocating movement of the needle 12a is possible, but on the other hand also at this point a seal against liquid leakage is ensured.
  • a receiving space 31 a for receiving the lovedsprühenden pigmented liquid is formed within the reservoir 31 so a receiving space 31 a for receiving the réellesprühenden pigmented liquid is formed.
  • This receiving space 31a is bounded laterally by the wall of the storage container 31, in front by the needle tip 12b seated tightly in the rest position in the seat 32a of the discharge opening 32 and rear by the Teflon seal 33.
  • a Nach hypothalafnung 34 which is completed by a slotted silicone membrane 35.
  • the silicone membrane 35 which is inserted in the embodiment shown in a further provided in the nozzle cap 37 and the Nachfiillö réelle 34 opening 34a, has a slot 35a, which fulfills a pressure compensation function. If, on actuation of the spraying device, a removal of pigmented liquid from the receiving space 31a of the storage container 31 occurs, air can flow into the receiving space 31a through the slot 35a, so that a Pressure equalization takes place. Otherwise, the negative pressure established in the receiving space 31a could otherwise impair the functioning of the spraying device.
  • the slit silicone membrane 35 is formed so that the pigmented liquid can not leak out through the slit 35a.
  • the silicone membrane 35 thus has a double function. On the one hand it ensures the pressure equalization, on the other hand it seals against a leakage of liquid.
  • the needle 12 a is provided within the receiving space 31 a with a stop disc 12 c, which is fixedly attached to the needle 12 a, for example, glued, pressed or welded. Between the stopper disc 12c and the Teflon seal 33 is designed as a compression spring coil spring 13a clamped, whereby the needle 12a is pressed with its needle tip 12b in the seat 32a. Upon actuation of the spraying device, the needle 12a is pulled axially against the spring force of the coil spring 13a, thereby slightly opening the discharge port 32a.
  • the needle 12a is at the front by means of the tapered front end portion of the reservoir 31, in particular by means of the seat provided there 32a, and at the rear by means of the Teflon seal 33, in particular by means of the through hole 33a, stirred.
  • a releasable positive connection of the needle 12a with an actuating tappet 15a is provided.
  • This connection is equipped for axial power transmission from the actuating plunger 15a to the needle 12a.
  • the needle 12a at its rear axial end on the side facing away from the receiving space 31a side of the Teflon seal 33 has a bent or bent attachment end portion 12d, which engages in the mounted state in a corresponding radial bore 15b of the actuating plunger 15a.
  • the connection is detachable, for example in the manner of a bayonet closure, formed, so that an exchange of the nozzle 12a comprising the needle 12a is possible.
  • the replaceable nozzle head 10a comprises not only the needle 12a but also depending on the current filling state more or less filled with pigmented liquid reservoir 31 with the inserted Teflon seal 33, the coil spring 13a and the outer nozzle cap 37 with the silicone membrane used there 35th Die Düsenkappe 37 ist more suitable in Fig. 2 not with fasteners shown, for example by means of a bayonet lock, releasably secured to the base body 1 of the Aufsprühvorraum. Due to the storage container 31, the nozzle head 10a is equipped with an integrated liquid tank.
  • the spraying device according to the invention which is designed in particular as a hand-held device, can thus be operated independently of an external liquid supply and, above all, without a voluminous external liquid tank placed on the nozzle head 10a separately.
EP08734896A 2007-04-11 2008-03-31 Vorrichtung zum aufsprühen von pigmentierten flüssigkeiten Active EP2134475B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08734896T PL2134475T3 (pl) 2007-04-11 2008-03-31 Urządzenie do rozpylania cieczy zawierających pigmenty

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007016992 2007-04-11
PCT/EP2008/002534 WO2008125209A1 (de) 2007-04-11 2008-03-31 Vorrichtung zum aufsprühen von pigmentierten flüssigkeiten

Publications (2)

Publication Number Publication Date
EP2134475A1 EP2134475A1 (de) 2009-12-23
EP2134475B1 true EP2134475B1 (de) 2011-05-25

Family

ID=39472022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08734896A Active EP2134475B1 (de) 2007-04-11 2008-03-31 Vorrichtung zum aufsprühen von pigmentierten flüssigkeiten

Country Status (14)

Country Link
US (1) US8052072B2 (ja)
EP (1) EP2134475B1 (ja)
JP (1) JP5186549B2 (ja)
KR (1) KR101450363B1 (ja)
CN (1) CN101652188B (ja)
AT (1) ATE510627T1 (ja)
BR (1) BRPI0810533B1 (ja)
CA (1) CA2683903C (ja)
DK (1) DK2134475T3 (ja)
ES (1) ES2363405T3 (ja)
HK (1) HK1138232A1 (ja)
MX (1) MX2009009972A (ja)
PL (1) PL2134475T3 (ja)
WO (1) WO2008125209A1 (ja)

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Also Published As

Publication number Publication date
ATE510627T1 (de) 2011-06-15
CA2683903C (en) 2014-08-19
EP2134475A1 (de) 2009-12-23
JP2010523320A (ja) 2010-07-15
BRPI0810533B1 (pt) 2019-09-03
HK1138232A1 (en) 2010-08-20
JP5186549B2 (ja) 2013-04-17
US20100224701A1 (en) 2010-09-09
DK2134475T3 (da) 2011-09-12
CA2683903A1 (en) 2008-10-23
CN101652188A (zh) 2010-02-17
CN101652188B (zh) 2013-11-06
PL2134475T3 (pl) 2011-10-31
KR20090128549A (ko) 2009-12-15
BRPI0810533A2 (pt) 2014-10-21
MX2009009972A (es) 2009-11-02
ES2363405T3 (es) 2011-08-03
KR101450363B1 (ko) 2014-10-14
WO2008125209A1 (de) 2008-10-23
US8052072B2 (en) 2011-11-08

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