EP3031531B1 - Buse de fermeture d'un jet de liquide - Google Patents

Buse de fermeture d'un jet de liquide Download PDF

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Publication number
EP3031531B1
EP3031531B1 EP15198624.7A EP15198624A EP3031531B1 EP 3031531 B1 EP3031531 B1 EP 3031531B1 EP 15198624 A EP15198624 A EP 15198624A EP 3031531 B1 EP3031531 B1 EP 3031531B1
Authority
EP
European Patent Office
Prior art keywords
jet
housing
passage
guide sleeve
sleeve
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
EP15198624.7A
Other languages
German (de)
English (en)
Other versions
EP3031531A1 (fr
Inventor
Willem Frederik Boode
Antonie Bijma
Richard Pauwels
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.)
Aebi Schmidt Nederland BV
Original Assignee
Aebi Schmidt Nederland BV
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 Aebi Schmidt Nederland BV filed Critical Aebi Schmidt Nederland BV
Priority to PL15198624T priority Critical patent/PL3031531T3/pl
Publication of EP3031531A1 publication Critical patent/EP3031531A1/fr
Application granted granted Critical
Publication of EP3031531B1 publication Critical patent/EP3031531B1/fr
Active 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
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve

Definitions

  • jet nozzles serve to form a liquid jet. This is particularly indicated when the liquid from the nozzle to a target has relatively large distance to bridge, which typically goes hand in hand with the requirement of a relatively strong limitation of the spatial distribution (ie bundling) of the liquid leaving the nozzle.
  • liquid jet nozzles On a defined liquid flow rate matched liquid jet nozzles are known in various designs and in practical use.
  • the above-mentioned, generic liquid jet nozzles were designed with feed-controlled variable passage cross-section. These have - as liquid jet shut-off nozzles - in addition to a closure function by the passage cross-section is completely closed when the pre-pressure falls below a predetermined value, which for example, the unwanted emptying of supply lines is prevented.
  • a predetermined value which for example, the unwanted emptying of supply lines is prevented.
  • the GB 760972 discloses a spray nozzle, which is intended to effect even at relatively low pressures, a distribution of very fine droplets or a mist within a spray cone.
  • the nozzle is equipped with a vortex chamber, which is connected upstream of an annular Zerstäubigerblende.
  • the nozzle can be switched to a second operating mode in which a beam formation takes place. In this mode, the liquid flows around a Pelton beam shaped body and occurs at the downstream end portion into an axially adjustable tube which in the second mode of operation obstructs the flow path to the atomizer nozzle whereas in the first mode of operation (spray nozzle) it abuts against and obstructs the flow path thereabout. The amount of fluid flowing through one or the other flow path is adjusted manually.
  • the EP 2127755 A1 discloses an integrated valve having a flow guide, as it is in particular a nozzle vorzunch.
  • an element which can be displaced in a housing comprise a closure body and a flow straightener downstream of the flow direction. The element is acted upon by means of a spring such that the closure body is biased against a sealing seat.
  • the present invention has been made in the light of the above-mentioned prior art, to provide a liquid jet nozzle of the type mentioned, which is characterized by improved performance.
  • the aim is to improve the beam forming behavior.
  • a guide sleeve is provided with a relation to the cross section of the pre-pressure chamber lower, aligned for passage of the throttle sleeve passage.
  • liquid-jet sealing nozzles according to the invention superior to those known generic jet nozzles in which, as determined by the inventors, there is a disturbance of the jet formation associated with the installation position.
  • known generic liquid jet shutter nozzles in practice show the desired result with sufficient reliability only in certain mounting positions, especially in that the beam forming behavior is more than satisfactory in more or less downwardly directed beam direction, but in an installation situation in which the exit direction of As the jet of liquid becomes increasingly shallower, significantly worsened, this prior art drawback does not occur with liquid jet closure nozzles according to the present invention. These deliver consistently good jet formation results regardless of the installation situation.
  • a guide sleeve according to the present invention is present (only) if the passage of the guide sleeve is at least as long as thick.
  • the (cross) section of the admission pressure chamber is not (only) the annular surface of the throttle sleeve exposed to the admission pressure, but rather the (entire) cross section bounded by the housing, including the cross-sectional area occupied by internals such as in particular the jetform body ,
  • the cross-section (the cross-sectional area) of the passage of the guide sleeve is preferably 0.3 to 0.5 times the value of the cross-sectional area of the pre-pressure space, which - in the case of round contours - has a diameter ratio of the passage of the guide sleeve to the pre-compression space between about 0.55 and 0 , 7 corresponds.
  • the diameter of the passage of the guide sleeve is preferably 1.0 to 1.5 times, more preferably 1.1 to 1.3 times the value of the diameter of the passage of the throttle sleeve.
  • the guide sleeve is preferably placed so that its distance from the throttle sleeve, when it rests against the beam forming body, is not greater than 1.5 times the value of the diameter of the passage of the throttle sleeve. Particularly preferably, that distance is not greater than 1.2 times the value of the diameter of the passage of the throttle sleeve.
  • the throttle sleeve preferably extends to the outlet opening of the housing. It is, in other words, preferably on the housing adjacent to the latter Beam exit opening provided. This is favorable for a particularly compact construction.
  • the jet shaped body is received in a stationary manner in the housing.
  • it may be inseparably connected to the housing, e.g. be integrally molded with this.
  • guide sleeve is preferably a separate component inserted into the housing. Between the guide sleeve and the actual housing an annular space is preferably carried out, in which a spring means for the throttle sleeve forming coil spring is partially received. This allows a particularly compact design of the liquid jet closure nozzle.
  • the guide sleeve can also form an integral part of the housing.
  • liquid inlet be disposed opposite the jet exit orifice, i. the liquid jet shutter nozzles is flowed through in its longitudinal direction.
  • a diameter for example, that of the housing or the passages of throttle sleeve and guide sleeve reference is taken, then this is to be understood in a shape deviating from a circular shape, line or contour of the average diameter. This is determined as the diameter of a circle which has the same area as the shape, line or contour deviating from a circular shape.
  • the substantially tubular housing 1 has a liquid inlet 4 and a jet outlet opening 5. The latter is opposite to the liquid inlet 4, so that the housing is flowed through in its longitudinal direction.
  • the jet shaped body 2 is arranged in a stationary manner in the housing 1 between the liquid inlet 5 and the jet outlet opening 5. It is supported on the housing 1 (in a pre-pressure chamber 6 of the housing 1 communicating with the liquid inlet 4) by way of a plurality of ribs 8 in such a way that flow around the jet shaped body 2 is possible.
  • the jet shaped body 2 has a conically tapered blind hole 9 on the inflow side and a conical region 10 on the outflow side with a tip 11 pointing in the direction of the jet outlet opening 5 of the housing 1. Between the cone region 10 of the jet shaped body 2 and the tubular housing 1, there is an annular space 12 with a cross-sectional area which increases in the direction of flow D.
  • throttle sleeve 3 is (in the longitudinal direction of the housing 1) relative to the housing 1 (and thus also the fixed thereto arranged jet-shaped body 2) displaceable, so that it forms a throttle slide.
  • the throttle sleeve 3 has a central passage 13 which cooperates with the cone region 10 of the jet shaped body 2 in the sense that it defines an annular passage cross-section 14 together with it.
  • the surface of the annular passage cross section 14 is variable; it depends on the (axial) position of the throttle sleeve 3 relative to the jet shaped body 2.
  • the throttle sleeve 3 has an annular piston section 15. This is sealingly performed in the communicating with the liquid inlet 4 pre-pressure chamber 6 of the housing 1, wherein the exposed to the form, the liquid inlet 4 facing surface is designed as a flow guide 17 in the manner of a Torusabitess arched.
  • the throttle sleeve 3 is more or less against the force of a spring device 18, which by a supported on a support ring 19 coil spring 20th is formed and the throttle sleeve 3 biased against the flow direction of the jet shaped body 2, moved in the direction of the jet outlet opening 5.
  • the area of the annular passage cross-section 14 formed between the jet shaped body 2 and the throttle sleeve 3 can be adjusted via the admission pressure predetermined in the admission pressure chamber.
  • a guide sleeve 21 is provided on the housing 1. This has a passage 13 of the throttle sleeve 3 aligned passage 22 and is connected by means of a molded-on collar 23 with the support ring 19.
  • the inner diameter of the guide sleeve 21 is considerably smaller than the inner diameter of the housing 1 in the region of the pre-pressure space 6, i.
  • the diameter of the annular piston portion 15 of the throttle sleeve 3 is about 16mm
  • the diameter of the passage 13 of the throttle sleeve 3 about 8mm
  • the diameter of the passage 22 of the guide sleeve 21 is about 10mm.
  • the wall thickness of the guide sleeve 21 is dimensioned such that an annular space 24 is formed between the guide sleeve 21 and the housing 1. In this, the coil spring 20 is partially received.
  • the annular space 24 is via (not shown) bores which pass through the wall of the housing 1, vented, may also run through the respective holes in the annulus 24 accumulated liquid.
  • the axial length of the guide sleeve 21 is dimensioned so that the maximum axial distance of the throttle sleeve 3 from the guide sleeve 21, i. the axial distance between the throttle sleeve 3 and the guide sleeve 21 is approximately 8 mm when the passage cross-section 14 is completely closed and thus approximately corresponds to the diameter of the passage 13 of the throttle sleeve 3.
  • the guide sleeve 21 forms a stop for the throttle sleeve 3 for their displacement in the direction of the outlet opening 5 (at maximum admission pressure in the pre-pressure space 16).
  • the guide sleeve 21 is an integral part of the housing 1.
  • the spring 20 is supported on the end face of the guide sleeve 21 forming step from; it protrudes into a formed between the housing 1 and the throttle sleeve 3 annulus.
  • the jet shaped body 2 forms here a separate component.
  • the ribs 8 are inserted (from the inflow side) into corresponding grooves of the housing 1.
  • An inserted into a corresponding recess of the housing 1 circlip 25 secures the jet shaped body. 2

Landscapes

  • Nozzles (AREA)

Claims (10)

  1. Buse à obturateur à jet de liquide avec une section transversale de passage (14) modifiable commandée en pression, comprenant
    - un boîtier (1) avec une entrée de liquide (4) et une ouverture de sortie de jet (5),
    - un corps de formation de jet (2) apte à être entouré de liquide, disposé dans le boîtier (1) entre l'entrée de liquide (4) et l'ouverture de sortie de jet (5), lequel présente une région conique (10) avec une pointe (11) dirigée vers l'ouverture de sortie de jet (5) du boîtier (1),
    - une douille d'étranglement (3) déplaçable par rapport au boîtier (1) et au corps de formation de jet (2), précontrainte contre la direction d'écoulement autour du corps de formation de jet (2) au moyen d'un dispositif à ressort (18), laquelle présente une section de piston annulaire (15) guidée dans une chambre de pression d'alimentation (6) du boîtier communiquant avec l'entrée de liquide (4), et un passage (13) coopérant avec la région conique (10) du corps de formation de jet (2) et définissant la section transversale de passage (14) annulaire ensemble avec celle-ci,
    caractérisée en ce que
    - en aval du corps de formation de jet (2) et de la douille d'étranglement (3), il est prévu une douille de guidage (21) sur le boîtier (1), avec un passage (22) réduit par rapport à la section transversale de la chambre de pression d'alimentation (6), en alignement avec le passage (13) de la douille d'étranglement (3).
  2. Buse à obturateur à jet de liquide selon la revendication 1, caractérisée en ce que la section transversale du passage (22) de la douille de guidage (21) est au moins aussi grande que la section transversale du passage (13) de la douille d'étranglement (3).
  3. Buse à obturateur à jet de liquide selon la revendication 2, caractérisée en ce que la section transversale du passage (22) de la douille de guidage (21) est plus grande que la section transversale du passage (22) de la douille d'étranglement (3).
  4. Buse à obturateur à jet de liquide selon l'une des revendications 1 à 3, caractérisée en ce que l'écart axial maximal entre la douille d'étranglement (3) et la douille de guidage (21) n'est pas plus grand que le diamètre moyen du passage (22) de la douille de guidage (21).
  5. Buse à obturateur à jet de liquide selon l'une des revendications 1 à 4, caractérisée en ce que l'écart axial maximal entre la douille d'étranglement (3) et la douille de guidage (21) n'est pas plus grand que le diamètre moyen du passage (13) de la douille d'étranglement (3).
  6. Buse à obturateur à jet de liquide selon l'une des revendications 1 à 5, caractérisée en ce que l'entrée de liquide (4) est disposée en face de l'ouverture de sortie de jet (5).
  7. Buse à obturateur à jet de liquide selon l'une des revendications 1 à 6, caractérisée en ce que le corps de formation de jet (2) est reçu de façon immobile dans le boîtier (1).
  8. Buse à obturateur à jet de liquide selon la revendication 7, caractérisée en ce que le corps de formation de jet (2) est relié au boîtier (1) de façon non séparable, la douille de guidage (21) formant une pièce séparée insérée dans le boîtier (1).
  9. Buse à obturateur à jet de liquide selon la revendication 8, caractérisée en ce que le dispositif à ressort (18) comporte un ressort hélicoïdal (20), lequel est partiellement reçu dans un espace annulaire (24) formé entre la douille de guidage (21) et le boîtier (1).
  10. Buse à obturateur à jet de liquide selon l'une des revendications 1 à 6, caractérisée en ce que la douille de guidage (21) forme un composant intégral du boîtier (1).
EP15198624.7A 2014-12-09 2015-12-09 Buse de fermeture d'un jet de liquide Active EP3031531B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15198624T PL3031531T3 (pl) 2014-12-09 2015-12-09 Dysza zamykająca strumień cieczy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014018130.8A DE102014018130A1 (de) 2014-12-09 2014-12-09 Flüssigkeitsstrahl-Verschlussdüse

Publications (2)

Publication Number Publication Date
EP3031531A1 EP3031531A1 (fr) 2016-06-15
EP3031531B1 true EP3031531B1 (fr) 2019-10-23

Family

ID=54843736

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15198624.7A Active EP3031531B1 (fr) 2014-12-09 2015-12-09 Buse de fermeture d'un jet de liquide

Country Status (5)

Country Link
EP (1) EP3031531B1 (fr)
DE (1) DE102014018130A1 (fr)
DK (1) DK3031531T3 (fr)
ES (1) ES2759234T3 (fr)
PL (1) PL3031531T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016123993B4 (de) 2016-12-09 2021-12-30 Aebi Schmidt Nederland Bv Flüssigkeitsstrahl-Verschlussdüse
DE102016123994A1 (de) 2016-12-09 2018-06-14 Aebi Schmidt Nederland Bv Flüssigkeitsstrahldüse
CN114321735A (zh) * 2020-09-30 2022-04-12 华为技术有限公司 双向自动关断装置及液冷系统
CN113864563B (zh) * 2021-10-15 2023-05-16 西安西热节能技术有限公司 一种调节管道局部流速的工质收束装置及方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB760972A (en) * 1953-03-27 1956-11-07 Josef Cornel Breinl Improvements in and relating to spray nozzles
US3684192A (en) * 1970-06-22 1972-08-15 Fire Task Force Innovations In Constant pressure, variable flow nozzle
JP2003159549A (ja) * 2001-09-12 2003-06-03 Ikeuchi:Kk スプレーノズル
EP2127755A1 (fr) * 2008-05-12 2009-12-02 Pnr Italia S.R.L. Guide d'écoulement avec vanne intégrée
US8146617B2 (en) * 2009-07-07 2012-04-03 Wen Yi Lin Check valve

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
ES2759234T3 (es) 2020-05-08
PL3031531T3 (pl) 2020-04-30
DK3031531T3 (da) 2020-01-13
DE102014018130A1 (de) 2016-06-09
EP3031531A1 (fr) 2016-06-15

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