EP3421138B1 - Pistolet pulvérisateur - Google Patents

Pistolet pulvérisateur Download PDF

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Publication number
EP3421138B1
EP3421138B1 EP17179059.5A EP17179059A EP3421138B1 EP 3421138 B1 EP3421138 B1 EP 3421138B1 EP 17179059 A EP17179059 A EP 17179059A EP 3421138 B1 EP3421138 B1 EP 3421138B1
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EP
European Patent Office
Prior art keywords
operating member
air outlet
operating
outlet passage
spray gun
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
EP17179059.5A
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German (de)
English (en)
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EP3421138A1 (fr
Inventor
Tao-Pao Chien
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Individual
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Individual
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Priority to EP17179059.5A priority Critical patent/EP3421138B1/fr
Publication of EP3421138A1 publication Critical patent/EP3421138A1/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
    • 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
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
    • 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

Definitions

  • the present invention relates to a spray gun, and more particularly to an adjustment valve having a plurality of operating members.
  • paint spray gun The function of a paint spray gun is mainly to use compressed air for spraying paints on an article to be painted.
  • paint spray guns In order to allow paint spray guns to meet various needs (such as, metal, wooden or plastic products to be painted, paints of different natures, finishing painting, preliminary painting, etc.), most paint spray guns are provided with a plurality of adjustment assemblies so that the users can make an adjustment according to their own needs. For example, the intake of the compressed air and the area or shape of painting can be adjusted.
  • a body portion of a spray gun main body is provided with an adjustment assembly in the form of a knob close to a grip portion, which facilitates the user to make an adjustment with the thumb when holding the spray gun.
  • a rear end of the body portion of the spray gun main body is provided with another adjustment assembly for the user to operate other adjustment functions.
  • JP 2008-161789A discloses a regulation valve device of a powder coating spray gun.
  • the regulation device comprises valves for regulating center and pattern adjusting air which are arranged coaxially.
  • the primary object of the present invention is to provide a spray gun to enhance the convenience of operating the spray gun.
  • a spray gun according to claim 1 is provided.
  • the spray gun comprises a spray gun main body and an adjustment valve.
  • the spray gun main body has an air intake passage, a first air outlet passage, a second air outlet passage, and a mounting hole defined therein.
  • the mounting hole is in communication with the air intake passage, the first air outlet passage, and the second air outlet passage.
  • the adjustment valve is mounted to the spray gun main body and located in the mounting hole.
  • the adjustment valve includes a first operating member and a second operating member.
  • the first operating member is movable relative to the spray gun main body for adjusting an outflow passing through the air intake passage and the first air outlet passage.
  • the second operating member is movably mounted on the first operating member and corresponds to the second air outlet passage for adjusting an outflow passing through the second air outlet passage.
  • the adjustment valve further comprises a valve seat.
  • the valve seat has a pivot trough defined therein.
  • the first operating member comprises a cylinder.
  • the cylinder is pivotally connected to the pivot trough of the valve seat.
  • the valve seat has a first opening and a second opening which are in communication with the pivot trough.
  • the first opening and the second opening are in communication with the air intake passage and the first air outlet passage, respectively.
  • the cylinder of the first operating member has at least one perforation. The perforation is staggered or communicated with the first the first opening or the second opening by turning the cylinder.
  • the cylinder has a through hole defined therein.
  • the second operating member is movably inserted in the through hole so that the second operating member can be displaced from a closed position to close the second air outlet passage to an open position to open the second air outlet passage.
  • the valve seat has a screw hole.
  • the screw hole is in communication with the pivot trough.
  • the second operating member is screwed to the screw hole.
  • the first operating member includes an operating portion.
  • the second operating member includes an operating end. The operating portion and the operating end are located at a same side and adjacent to each other.
  • the operating end has a smooth surface adjacent to the operating portion.
  • the operating portion is slidably fitted on the smooth surface.
  • the mounting hole is formed with a valve hole adjacent to the second air outlet passage.
  • the second operating member includes an engaging end opposite the operating end.
  • the engaging end is configured to close or open the valve hole.
  • the engaging end has a guide bevel.
  • the guide bevel has an angle of 77 ° to 79 °.
  • the spray gun main body comprises a grip portion, a spray head, and a body portion.
  • the air intake passage is located in the grip portion.
  • the air intake passage extends along a longitudinal direction of the grip portion.
  • the body portion is connected with the grip portion and the spray head.
  • the first air outlet passage and the second air outlet passage are located at opposing two sides of the body portion.
  • the mounting hole is located in the body portion adjacent to the grip portion.
  • the spray head comprises a first nozzle and a second nozzle.
  • the first air outlet passage is in communication with the first nozzle.
  • the second air outlet passage is in communication with the second nozzle.
  • an adjustment valve comprises a valve seat, a first operating member, and a second operating member.
  • the valve seat has a pivot trough defined therein.
  • the valve seat further has a first opening, a second opening, and a screw hole which are in communication with the pivot trough.
  • the first operating member is pivotally connected to the pivot trough of the valve seat.
  • the first operating member comprises a cylinder extending along an axial direction.
  • the cylinder has at least one perforation in a radial direction. The perforation is staggered or communicated with the first the first opening and/or the second opening by turning the first operating member.
  • the cylinder has a through hole defined therein and extending along the axial direction.
  • the second operating member is screwed to the screw hole and inserted in the through hole. The second operating member is displaced along the axial direction when rotated.
  • the present invention can achieve the following effects:
  • a spray gun according to a preferred embodiment of the present invention comprises a spray gun main body (1) and an adjustment valve (2) mounted to the spray gun main body (1).
  • the spray gun main body (1) comprises a grip portion (11), a spray head (12), and a body portion (13) connected with the grip portion (11) and the spray head (12).
  • the adjustment valve (2) is located at the body portion (13) close to the grip portion (11). It is convenient for the user to operate the spray gun with the thumb.
  • the spray gun main body (1) is mainly applied to spray paint, so the spray gun main body (1) may further comprise a paint supply portion (14).
  • the paint supply portion (14) is configured to connect a paint can, as an example.
  • a trigger (15) of the spray gun main body (1) is pressed to a predetermined position, the spray head (12) sprays paint accompanied with the compressed air.
  • the mechanism is that the trigger (15) drives a valve member (such as, a valve needle) to move for spraying paint.
  • a valve member such as, a valve needle
  • the spray gun main body (1) in addition to the paint spraying, may be operated by slightly pressing the trigger (15) to spray the compressed air for removing dust and other debris on the surface of an article.
  • the grip portion (11) has an air intake passage (111) extending in a longitudinal direction of the grip portion (11) for introducing an external fluid (such as, a high-pressure air).
  • the spray head (12) may be used for spraying paints of different patterns.
  • the spray head (12) may comprise a first nozzle (121) and a plurality of second nozzles (122).
  • the first nozzle (121) is located at the center of the spray head (12) and has a circular hole for supplying a circular area of painting.
  • the second nozzle (122) is located on the periphery of the first nozzle (121) for spray paints laterally, which may be combined with the aforesaid circular area of painting to form a strip-like area of painting.
  • the paint patterns and the position relationship are merely illustrative and are not limited thereto.
  • the inside of the spray head (12) has a distributary mechanism for communicating the first nozzle (121) and the second nozzles (122). This is the common knowledge in this field. For the sake of simplicity, the details of the distributary mechanism will not be described hereinafter.
  • the body portion (13) is connected with the grip portion (11) and the spray head (12).
  • the body portion (13) has a first air outlet passage (131), a second air outlet passage (132), and a mounting hole (133) therein.
  • the first air outlet passage (131) and the second air outlet passage (132) are located at opposing two sides of the body portion (13).
  • the mounting hole (133) is located in the body portion (13) adjacent to the grip portion (11).
  • the mounting hole (133) is in communication with the first air outlet passage (131), the second air outlet passage (132), and the air intake passage (111).
  • the first air outlet passage (131) is in communication with the first nozzle (121).
  • the second air outlet passage (132) is in communication with the second nozzles (122).
  • the adjustment valve (2) includes a first operating member (21) and a second operating member (22).
  • the first operating member (21) includes an operating portion (210).
  • the second operating member (22) includes an operating end (220).
  • the operating portion (210) and the operating end (220) are adjacent to each other and are located at the same side for facilitating the user to perform a fine adjustment with the thumb.
  • the operating portion (210) is a ring and surrounds the operating end (220).
  • the operating portion (210) and the operating end (220) are provided with a plurality of anti-slip ripples (2110), (2210).
  • the operating end (220) has a smooth surface (2201) adjacent to the operating portion (210).
  • the operating portion (210) is slidably fitted on the smooth surface (2201), thereby reducing the frictional resistance when the operation portion (210) is displaced.
  • the adjustment valve (2) further comprises a valve seat (23).
  • the valve seat (23) is screwedly mounted to the mounting hole (133).
  • the first operating member (21) and the second operating member (22) are mounted to the spray gun main body (1) through the valve seat (23).
  • the first operating member (21) comprises a cylinder (211) and an actuating member (212).
  • the actuating member (212) and the cylinder (211) are connected together through a connecting member (212).
  • the connecting member (213) is inserted through the valve seat (23). Two ends of the connecting member (213) are fixedly connected to the actuating member (212) and the cylinder (211) by screwing, fitting, binding, respectively.
  • the actuating member (212) includes the operating portion (210) for the user to pull the actuating member (212) to link the cylinder (211).
  • the valve seat (23) has a pivot trough (231) defined therein.
  • the cylinder (211) is pivotally connected in the pivot trough (231).
  • the valve seat (23) has a limit slot (230) formed thereon.
  • the connecting member (213) is located in the limit slot (230).
  • the limit slot (230) is configured to limit the displacement stroke of the connecting member (213).
  • the cylinder (211) extends along an axial direction.
  • the cylinder (211) has at least one perforation (2111), (2112) formed in a radial direction thereof and a through hole (2113) formed in the axial direction.
  • the cylinder (211) has a first perforation (2111) and a second perforation (2112) formed thereon.
  • the valve seat (23) has a first opening (232) and a second opening (233) which are in communication with the pivot trough (231).
  • the first opening (232) and the first perforation (2111) each have a first diameter.
  • the second opening (233) and the second perforation (2112) each have a second diameter.
  • the first diameter is greater than the second diameter, thereby providing a sufficient adjustment stroke in a limited size of the cylinder (211).
  • the first perforation (2111) and the second perforation (2112) may be staggered, partially communicated with, or fully communicated with the first opening (232) and the second opening (233) during turning.
  • the second operating member (22) is movably inserted in the through hole (2113) of the cylinder (211).
  • the valve seat (23) has a screw hole (234) communicating with the pivot trough (231).
  • the second operating member (22) is screwed to the screw hole (234).
  • the adjustment valve (2) may cooperate with a sealing member for providing a sealing effect.
  • the adjustment valve (2) may further comprise a first sealing ring (24), a second sealing ring (25) and a third sealing ring (26).
  • the first sealing ring (24) is fitted on the outer periphery of the valve seat (23).
  • the second sealing ring (25) is located between the valve seat (23) and the first operating member (21).
  • the third sealing ring (26) is located between the valve seat (23) and the second operating member (22).
  • the diameter of the first perforation (2111) is greater, the outflow passing through the air intake passage (111) and the first air outlet passage (131) can be controlled together, but not limited thereto.
  • the diameter of the second perforation (2112) may be changed for communicating the second perforation (2112) with the second opening (233) constantly, such that the adjustment can be achieved through the first perforation (2111) only.
  • the mounting hole (133) is formed with a valve hole (134) adjacent to the second air outlet passage (132).
  • the second operating member (22) includes an engaging end (221) opposite the operating end (220) for closing or opening the valve hole (134).
  • the second operating member (22) is rotated, the second operating member (22) is displaced along an axial direction (L) through the screw hole (234) of the valve seat (23), such that the second operating member (22) is displaced from a closed position to close the valve hole (134) to an open position to open the valve hole (134).
  • the outflow passing through the second air outlet passage (132) is controlled by the magnitude of the displacement.
  • the engaging end (221) is formed with a guide bevel (222) having an angle of 77 ° to 79 °.
  • the angle of the guide bevel (222) is 78

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  • Nozzles (AREA)

Claims (9)

  1. Pistolet pulvérisateur, caractérisé par le fait qu'il comprend :
    un corps principal d'un pistolet pulvérisateur (1), comportant un passage d'admission d'air (111), un premier passage de sortie d'air (131), un second passage de sortie d'air (132), et un trou de montage (133) défini dans celui-ci, le trou de montage (133) étant en communication avec le passage d'admission d'air (111), le premier passage de sortie d'air (131) et le second passage de sortie d'air (132) ; et
    un clapet de réglage (2), monté sur le corps principal du pistolet pulvérisateur (1) et situé dans le trou de montage (133), le clapet de réglage (2) incluant un premier élément d'actionnement (21) et un second élément d'actionnement (22), le premier élément d'actionnement (21) étant mobile par rapport au corps principal du pistolet pulvérisateur (1) pour régler un débit sortant passant à travers le passage d'admission d'air (111) et le premier passage de sortie d'air (131), le second élément d'actionnement (22) étant monté de manière mobile sur le premier élément d'actionnement (21) et correspondant au second passage de sortie d'air (132) pour régler un débit sortant passant à travers le second passage de sortie d'air (132)
    le clapet de réglage (2) caractérisé par le fait qu'il comprend en outre un siège de clapet (23),
    caractérisé en ce que
    le siège de clapet (23) comporte une cavité pivotante (231) définie dans celui-ci, le premier élément d'actionnement (21) comprend un cylindre (211), et le cylindre (211) est raccordé de manière pivotante à la cavité pivotante (231) du siège de clapet (23), et en ce que
    le siège de clapet (23) comporte une première ouverture (232) et une seconde ouverture (233) qui sont en communication avec la cavité pivotante (231), la première ouverture (232) et la seconde ouverture (233) sont en communication avec le passage d'admission d'air (111) et le premier passage de sortie d'air (131) respectivement, le cylindre (211) du premier élément d'actionnement (21) comporte au moins une perforation (2111, 2112), et la perforation (2111, 2112) est décalée ou en communication avec la première ouverture (232) ou la seconde ouverture (233) en tournant le cylindre (211).
  2. Pistolet pulvérisateur selon la revendication 1, caractérisé par le fait que le cylindre (211) comporte un trou traversant (2113) défini dans celui-ci, le second élément d'actionnement (22) est inséré de manière mobile dans le trou traversant (2113) de sorte que le second élément d'actionnement (22) peut être déplacé d'une position fermée pour fermer le second passage de sortie d'air (132) à une position ouverte pour ouvrir le second passage de sortie d'air (132).
  3. Pistolet pulvérisateur selon la revendication 2, caractérisé par le fait que le siège de clapet (23) comporte un trou de vis (234), le trou de vis (234) est en communication avec la cavité pivotante (231), et le second élément d'actionnement (22) est vissé au trou de vis (234).
  4. Pistolet pulvérisateur selon la revendication 3, caractérisé par le fait que le premier élément d'actionnement (21) inclut une partie d'actionnement (210), le second élément d'actionnement (22) inclut une extrémité d'actionnement (220), la partie d'actionnement (210) et l'extrémité d'actionnement (220) sont situées d'un même côté et adjacentes l'une à l'autre.
  5. Pistolet pulvérisateur selon la revendication 4, caractérisé par le fait que l'extrémité d'actionnement (220) comporte une surface lisse (2201) adjacente à la partie d'actionnement (210), et la partie d'actionnement (210) est ajustée de manière coulissante sur la surface lisse (2201).
  6. Pistolet pulvérisateur selon la revendication 4, caractérisé par le fait que le trou de montage (133) est formé avec un trou de clapet (134) adjacent au second passage de sortie d'air (132), le second élément d'actionnement (22) inclut une extrémité d'engagement (221) en face de l'extrémité d'actionnement (220), l'extrémité d'engagement (221) est configurée pour fermer ou ouvrir le trou de clapet (134), l'extrémité d'engagement (221) comporte un biseau de guidage (222), et le biseau de guidage (222) comporte an angle de 77° à 79°.
  7. Pistolet pulvérisateur selon la revendication 1, caractérisé par le fait que le corps principal du pistolet pulvérisateur (1) comprend une partie de préhension (11), une tête de pulvérisation (12), et une partie de corps (13), le passage d'admission d'air (111) est situé dans la partie de préhension (11), le passage d'admission d'air (111) s'étend le long d'une direction longitudinale de la partie de préhension (11), la partie de corps (13) est reliée avec la partie de préhension (11) et la tête de pulvérisation (12), le premier passage de sortie d'air (131) et le second passage de sortie d'air (132) sont situés à deux côtés opposés de la partie de corps (13), le trou de montage (133) est situé dans la partie de corps (13) adjacente à la partie de préhension (11), la tête de pulvérisation (12) comprend une première buse (121) et une seconde buse (122), le premier passage de sortie d'air (131) est en communication avec la première buse (121), et le second passage de sortie d'air (132) est en communication avec la seconde buse (122).
  8. Pistolet pulvérisateur selon la revendication 1, caractérisé par le fait que le siège de clapet (23) comporte en outre un trou de vis (234) qui est en communication avec la cavité pivotante (231) ; le premier élément d'actionnement (21) étant raccordé de manière pivotante à la cavité pivotante (231) du siège de clapet (23), le cylindre (211) du premier élément d'actionnement (21) s'étendant dans une direction axiale, la ou les perforations (2111, 2112) du cylindre étant dans une direction radiale, et la perforation (2111, 2112) étant décalée ou en communication avec la première ouverture (232) et/ou la seconde ouverture (233) en tournant le premier élément d'actionnement (21), le cylindre (211) comportant un trou traversant (2113) défini dans celui-ci et s'étendant dans la direction axiale ; le second élément d'actionnement (22) étant vissé au trou de vis (234) et inséré dans le trou traversant (2113), le second élément d'actionnement (22) étant déplacé le long de la direction axiale lors de la rotation.
  9. Pistolet pulvérisateur selon la revendication 8, caractérisé par le fait que le premier élément d'actionnement (21) inclut une partie d'actionnement (210), le second élément d'actionnement (22) inclut une extrémité d'actionnement (220), la partie d'actionnement (210) et l'extrémité d'actionnement (220) sont situées d'un même côté et adjacentes l'une à l'autre.
EP17179059.5A 2017-06-30 2017-06-30 Pistolet pulvérisateur Active EP3421138B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17179059.5A EP3421138B1 (fr) 2017-06-30 2017-06-30 Pistolet pulvérisateur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17179059.5A EP3421138B1 (fr) 2017-06-30 2017-06-30 Pistolet pulvérisateur

Publications (2)

Publication Number Publication Date
EP3421138A1 EP3421138A1 (fr) 2019-01-02
EP3421138B1 true EP3421138B1 (fr) 2019-09-04

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EP17179059.5A Active EP3421138B1 (fr) 2017-06-30 2017-06-30 Pistolet pulvérisateur

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3103871B1 (fr) * 2019-11-29 2021-12-31 Exel Ind Ensemble comprenant un pointeau indémontable en position fermé, pistolet pulvérisateur et procédé d’installation associés

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB518406A (en) * 1939-03-28 1940-02-26 Francis Colin Capener Spray gun
ATE163577T1 (de) 1994-10-13 1998-03-15 Sata Farbspritztechnik Druckluftbetriebene farbspritzpistole
JP2008161789A (ja) * 2006-12-27 2008-07-17 Anest Iwata Corp 粉体塗装スプレーガンの調節弁装置
DE102009032399A1 (de) 2009-07-08 2011-01-13 Sata Gmbh & Co. Kg Farbspritzpistole
US8486030B2 (en) * 2009-12-04 2013-07-16 Sunless, Inc. Hand held skin treatment spray system with proportional air and liquid control
EP2646166B1 (fr) 2010-12-02 2018-11-07 SATA GmbH & Co. KG Pistolet de pulvérisation et accessoire

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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