EP1478468B1 - Device for spraying water jets with removable seal support - Google Patents

Device for spraying water jets with removable seal support Download PDF

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Publication number
EP1478468B1
EP1478468B1 EP03718890A EP03718890A EP1478468B1 EP 1478468 B1 EP1478468 B1 EP 1478468B1 EP 03718890 A EP03718890 A EP 03718890A EP 03718890 A EP03718890 A EP 03718890A EP 1478468 B1 EP1478468 B1 EP 1478468B1
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EP
European Patent Office
Prior art keywords
seal holder
seal
grooves
perforated plate
holder
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.)
Expired - Lifetime
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EP03718890A
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German (de)
French (fr)
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EP1478468A1 (en
Inventor
Frédéric NOELLE
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.)
Rieter Perfojet SAS
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Rieter Perfojet SAS
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Publication of EP1478468A1 publication Critical patent/EP1478468A1/en
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets
    • 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
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/20—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor

Definitions

  • the present invention relates to a device for jetting water jets, useful in particular for the hydraulic bonding of fibers into nonwovens.
  • This binding consists of sending a curtain of pressurized water jets onto a sheet of fibers to entangle them and form them into a coherent sheet, without requiring the use of binder or resin.
  • the EP-07 251 75 discloses a water jet device comprising a pressure-resistant body and defining an inner chamber.
  • the oblong cylindrical inner chamber has an inlet and, preferably, two inlets respectively on its end faces and communicates, with the interposition of a perforated plate, with an outlet opening outside the body.
  • the perforated plate is in contact with a seal.
  • a troubleshooting groove the height of which corresponds to a little more than the thickness of the seal and a longitudinal plate can be inserted into this repair groove, this longitudinal sheet having, on the lower face, a seal clamping device.
  • a seal of circular cross section which also carries the perforated plate.
  • the seals At the factory, put the seals in the seal holder and put the seal holder in position in the body once and for all, before mounting the body. If the seal wears, besides it is emphasized that this happens rarely, it is easily replaced in the manner described in EP-0 725 175 .
  • performing these joint replacement operations is an operation that requires too much skill to be performed in a short time, especially for joints of great length of several meters.
  • the invention overcomes these disadvantages by a device in which the replacement of the seal can be performed in a safe manner and in a short time, even by an inexperienced operator and in which the number of parts is reduced and is less affected. to the integrity of the body.
  • the invention relates to a device for jetting water jets, formed of basic components: a body at least one jaw and a perforated plate, the jaw being fixed to the body so as to retain the perforated plate supported by a seal holder, the device comprising means for projecting water from inside the body to the outside through the perforated plate and means for holding the shape of the seal holder, in which the means of maintenance are formed by one of the same basic components. It is characterized in claim 1
  • the perforated plate is mounted so that it can be removed from the body independently of the seal carrier. When it is necessary to replace only the perforated plate, it is thus possible to leave the seal holder in place.
  • a first annular seal carried by the seal holder is in contact with the perforated plate, while a second annular seal carried by the seal holder is in contact with the body.
  • the two seals extend respectively on opposite sides of the seal carrier. They are preferably rectangular joints with rounded tops.
  • the seal carrier has the shape of a plate with a thickness of 2 to 10 mm. Because of this small thickness, the jets do not do not lose much of their speed when they pass through the slot in the seal holder before exiting the exit.
  • the guide portions are shaped so as to allow the seal carrier to slide in a direction parallel to the axis, but with the possibility of movement in the direction perpendicular to the perforated plate, the door -Joint being in particular a U-shaped profile, the U core bearing the joints and the two branches of the U facing the inner chamber penetrating into respective grooves of the body to guide the seal holder and deeper than the height branches.
  • the presence of these branches and grooves does not make it more difficult to screw the jaw to the body during manufacture.
  • the body has spacer portions of the guide portions.
  • the guide portions are ribs which are formed only on one of the end portions of the seal holder and which cooperate with grooves of the body, constituting the indexing and arranged parts that over a length corresponding substantially to that of the grooves.
  • the guide portions are ribs which are provided only on one of the end sections of the seal holder and which cooperate with grooves of the body constituting the indexing portions and arranged over a length substantially corresponding to that of the grooves, and the new assembly is introduced by introducing it by said end section.
  • the invention also relates to a fiber binding system in a nonwoven, comprising a cylinder on the lateral face of which the fibers to be bonded and a device according to the invention whose jets are directed on the lateral face of the cylinder
  • the jet projection device comprises a parallelepipedal fixed body 1 having two large faces 2, 3 opposite, two small faces 4, 5 opposite, and two opposite end faces 6.
  • the body 1 is made of steel.
  • connectors constituting an inlet communicating with a source of pressurized water that is not shown.
  • a cylindrical filter 9 of the same shape as the chamber 7, but of smaller diameter.
  • the face 5 of the body consists of two jaws 10 which are screwed to the rest of the body 1 by screws 11.
  • the jaws 10 delimit a cavity in which is housed a seal holder 14 made of metal, plastic or composite material, composed of a core 15 with a thickness of 5 mm and two lateral branches 16, 17, forming guide portions, extending parallel to the axis 8.
  • the joint-holder has a longitudinal slot 18 in With respect to the channel 12 and the outlet 13.
  • the seal holder 14 comprises a groove 19 facing the chamber 7 and in which is housed an annular seal 20.
  • the seal holder 14 comprises an annular groove 21 as the groove 19 and in which is housed a second annular seal 22.
  • the seal 20 is closer to the slot 18 than the seal 22.
  • a perforated plate 23 and microperforations On the face comprising the seal 20, is placed a perforated plate 23 and microperforations whose diameter is between 50 and 500 microns and preferably between 100 and 200 microns, which makes it possible to form jets or needles of water. These perforations are arranged in a row or two rows parallel to the axis 8 and facing the slot 18.
  • the branches 16, 17 pass in grooves 24 formed in the body 1 and this seal holder 14 can be removed from the device, after a plug 25 has been removed.
  • the solid part of the body 1 between the grooves 24 serves as a spacer and thus maintains the shape of the seal holder 14 despite its thinness by preventing it from closing when subjected to pressure forces.
  • the free ends 25 of the end portions 16, 17 of the seal carrier are at a distance from the bottom of grooves 24.
  • the body 101 has two longitudinal bores 102 and 103.
  • the two bores 102 and 103 are separated from each other by an intermediate wall 104 in which there are formed through holes 105 placing in communication the bores 102 and 103.
  • a narrower slot 106 for the outlet of the liquid.
  • the bore 102 is supplied with water under pressure by a source that is not presented.
  • a plate 107 perforated and mounted in a cylindrical seal holder 108 whose outer diameter is adapted to the diameter of the chamber 103 and which can slide along the chamber 103 a filter 112 is mounted above the seal carrier 108.
  • the cylindrical seal carrier 108 has a first longitudinal slot 109 which extends in the axial direction of the seal carrier 108 and which has more or less than the width of the perforated plate 107.
  • an annular seal 110 In the bottom of the first longitudinal slot 109 is housed an annular seal 110.
  • On one of the front sides of the cylindrical seal holder 108 is provided at least in the width of the plate 107 seal holder a slot 104 which is better seen at the figure 5 in order to be able to replace the plate 107 seal holder without the seal holder 108 is removed. But it can also remove the seal holder 108 of the water jet device by sliding.
  • the seal holder 108 comprises two ribs 116 which extend only over a portion of its length from the end having the slot 104. These ribs 116 serve as guide portions and are conjugated with grooves in the groove. body 101 and serving as indexing parts.
  • the seal holder 108 To mount the seal holder 108 in the body 1, it is engaged by the end 113 in the body 1 until the grooves 120 cooperate with their ribs 116. The seal holder 108 is thus fixed in position without possibility of turning. In order to change the seal, the seal holder 108 is removed by sliding it parallel to its axis in the same way as the perforated plate 107 slides, the worn seal is removed, a new seal is put in place, these two operations being carried out on the bench without being disturbed and the seal holder 108 is put back in the body 101.
  • the seal holder Under pressure, the seal holder would tend to close inwards but it is prevented by the body so that the perforated plate does not undergo mechanical stress of the seal holder. It is not pinched by the seal holder.
  • the bracing allows, when the injection device is under pressure, to center the seal holder.
  • the holding means are constituted by the fact that the seal holder 621 comprises in cross section two balls 622 which are guided in the body 605.
  • the shape of the seal holder 621 is thus maintained thanks to the fact that the balls 622 are engaged in cavities conjugate retainers of the jaw 605.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Nozzles (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Seal Device For Vehicle (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Packages (AREA)
  • Catching Or Destruction (AREA)

Abstract

The water jet feeder consists of a pressure-resistant body (1) with jaws (10), an inner chamber (7) and a perforated plate with a seal (20) covering its outlet channel (12). The seal holder is detachable from the body and has guides that are aligned with marks on the body for accurate positioning of the seal holder after removal. The guides are designed to allow the seal holder to slide parallel to the axis of the body, but also to move perpendicular to the perforated plate, and are in the form of ribs on one end of the seal holder engaging with grooves on the feeder body. The seal holder has a U-shaped cross-section with the branches of the U facing the inner chamber and engaging with grooves (24) in the body.

Description

La présente invention se rapporte à un dispositif de projection de jets d'eau, utile notamment pour le liage hydraulique de fibres en des non tissés. Ce liage consiste à envoyer un rideau de jets d'eau sous pression sur une nappe de fibres pour les enchevêtrer et les former en une nappe cohérente, sans nécessiter l'utilisation de liant ou de résine.The present invention relates to a device for jetting water jets, useful in particular for the hydraulic bonding of fibers into nonwovens. This binding consists of sending a curtain of pressurized water jets onto a sheet of fibers to entangle them and form them into a coherent sheet, without requiring the use of binder or resin.

Le EP-07 251 75 décrit un dispositif de projection de jets d'eau comprenant un corps résistant à la pression et délimitant une chambre intérieure. La chambre intérieure cylindrique oblongue a une entrée et, de préférence, deux entrées respectivement sur ses faces frontales et communique, avec interposition d'une plaque perforée, avec une sortie débouchant à l'extérieur du corps. La plaque perforée est en contact avec un joint d'étanchéité. Pour faciliter le remplacement du joint annulaire appliqué à la plaque perforée, sans avoir à effectuer des dévissages fastidieux pour le démontage, il est prévu, sur toute la longueur et sur toute la largeur d'une rainure de réception du joint, une rainure de dépannage dont la hauteur correspond à un peu plus que l'épaisseur du joint d'étanchéité et une tôle longitudinale peut être insérée dans cette rainure de dépannage, cette tôle longitudinale présentant, sur la face inférieure, un dispositif de serrage de joint. Pour remplacer le joint que l'on a ôté comme on a pu, on met la tôle munie d'un nouveau joint dans la rainure de dépannage et à l'aide d'un outil, on fait rouler le nouveau joint vers le bas où il doit glisser dans la rainure qui lui est destinée. Au DE-A- 199 21 694 , on perfectionne le dispositif décrit au EP-0 725 175 en vue d'en simplifier le montage. On prévoit à cet effet un porte-joint de section droite circulaire qui porte également la plaque perforée. A l'usine, on met les joints dans le porte-joint et on met le porte-joint en position dans le corps une fois pour toutes, avant de monter le corps. Si le joint s'use, au demeurant on souligne que cela se produit rarement, on le remplace aisément de la façon décrite au EP-0 725 175 . L'expérience a montré qu'effectuer ces opérations de remplacement du joint est une opération qui demande trop d'habileté pour être réalisée en peu de temps, notamment pour des joints de grande longueur de plusieurs mètres.The EP-07 251 75 discloses a water jet device comprising a pressure-resistant body and defining an inner chamber. The oblong cylindrical inner chamber has an inlet and, preferably, two inlets respectively on its end faces and communicates, with the interposition of a perforated plate, with an outlet opening outside the body. The perforated plate is in contact with a seal. To facilitate the replacement of the annular seal applied to the perforated plate, without having to make tedious unscrewing for disassembly, there is provided, along the entire length and over the entire width of a seal receiving groove, a troubleshooting groove the height of which corresponds to a little more than the thickness of the seal and a longitudinal plate can be inserted into this repair groove, this longitudinal sheet having, on the lower face, a seal clamping device. To replace the seal that was removed as best we could, put the sheet with a new seal in the troubleshooting groove and using a tool, we roll the new seal down where he must slip into the groove destined for him. At DE-A-199 21 694 , the device described in EP-0 725 175 in order to simplify the assembly. For this purpose is provided a seal of circular cross section which also carries the perforated plate. At the factory, put the seals in the seal holder and put the seal holder in position in the body once and for all, before mounting the body. If the seal wears, besides it is emphasized that this happens rarely, it is easily replaced in the manner described in EP-0 725 175 . Experience has shown that performing these joint replacement operations is an operation that requires too much skill to be performed in a short time, especially for joints of great length of several meters.

Au US-A 504 2 722 étant le document le plus proche, on décrit un dispositif de projection de jets d'eau ayant une cassette amovible dans un corps et comportant une plaque perforée, un porte-joint et une pièce d'entretoisement. Tout comme dans les documents précédents, la cassette est de grande dimension et nécessite en conséquence de percer dans le corps un trou de grande dimension, ce qui n'est pas souhaitable du point de vue de la résistance à la pression et le remplacement de la plaque perforée et/ou du porte-joint est compliqué, puisqu'il faut dévisser la pièce d'entretoisement pour accéder à la plaque perforée.At U.S.-A 504 2,722 being the closest document, there is described a device for projecting water jets having a removable cassette in a body and comprising a perforated plate, a seal holder and a spacer piece. As in the previous documents, the cassette is large and requires a hole of large size, which is undesirable from the point of view of pressure resistance, and the replacement of the perforated plate and / or the seal holder is complicated, since it is necessary to unscrew the spacer piece to access the perforated plate.

L'invention pallie ces inconvénients par un dispositif dans lequel le remplacement du joint peut s'effectuer, d'une manière sûre et en peu de temps, même par un opérateur inexpérimenté et dans lequel on diminue le nombre de pièces et on porte moins atteinte à l'intégrité du corps.The invention overcomes these disadvantages by a device in which the replacement of the seal can be performed in a safe manner and in a short time, even by an inexperienced operator and in which the number of parts is reduced and is less affected. to the integrity of the body.

L'invention a pour objet un dispositif de projection de jets d'eau, formé d'éléments constitutifs de base : un corps au moins un mors et une plaque perforée, le mors étant fixé au corps de manière à y retenir la plaque perforée soutenue par un porte-joint, le dispositif comprenant des moyens destinés à projeter de l'eau de l'intérieur du corps à l'extérieur à travers la plaque perforée et des moyens de maintien de la forme du porte-joint, dans lequel les moyens de maintien sont formés par l'un même des éléments constitutifs de base. Il est caractérisé à la revendication 1The invention relates to a device for jetting water jets, formed of basic components: a body at least one jaw and a perforated plate, the jaw being fixed to the body so as to retain the perforated plate supported by a seal holder, the device comprising means for projecting water from inside the body to the outside through the perforated plate and means for holding the shape of the seal holder, in which the means of maintenance are formed by one of the same basic components. It is characterized in claim 1

Pour remplacer le joint, on retire le porte-joint comportant le joint ancien, on le met sur l'établi, on en enlève en toute facilité le joint ancien détérioré sans avoir à enlever au préalable une entretoise et on y met, également en toute facilité parce que l'on a bien accès au-dessus du porte-joint qui est bien à plat sur l'établi et sans être gêné par le fait que l'on se trouverait dans un espace réduit à l'intérieur du corps, un joint neuf. Ces opérations effectuées, on remet le porte-joint garni du joint en place dans le dispositif par un simple mouvement de coulissement.To replace the seal, remove the seal holder with the old seal, it is put on the workbench, it is easy to remove the old seal deteriorated without having to remove a spacer beforehand and it puts, also in all facilitated because it has good access above the seal holder which is flat on the bench and without being bothered by the fact that one would be in a small space inside the body, a new seal. Once these operations have been carried out, the seal-filled gasket is replaced in the device by a simple sliding movement.

De préférence, la plaque perforée est montée de manière à pouvoir être retiré du corps indépendamment du porte-joint. Lorsque l'on a besoin de remplacer seulement la plaque perforée, on peut ainsi laisser le porte-joint en place.Preferably, the perforated plate is mounted so that it can be removed from the body independently of the seal carrier. When it is necessary to replace only the perforated plate, it is thus possible to leave the seal holder in place.

Pour mieux assurer l'étanchéité, un premier joint annulaire porté par le porte-joint est en contact avec la plaque perforée, tandis qu'un second joint annulaire porté par le porte-joint est en contact avec le corps. Les deux joints s'étendent respectivement sur des faces opposées du porte-joint. Ce sont de préférence des joints rectangulaires à sommets arrondis.To better seal, a first annular seal carried by the seal holder is in contact with the perforated plate, while a second annular seal carried by the seal holder is in contact with the body. The two seals extend respectively on opposite sides of the seal carrier. They are preferably rectangular joints with rounded tops.

De préférence, le porte-joint a la forme d'une plaque d'une épaisseur de 2 à 10 mm. En raison de cette petite épaisseur, les jets ne perdent pas beaucoup de leur vitesse lorsqu'ils passent dans la fente ménagée dans le porte-joint avant de sortir par la sortie.Preferably, the seal carrier has the shape of a plate with a thickness of 2 to 10 mm. Because of this small thickness, the jets do not do not lose much of their speed when they pass through the slot in the seal holder before exiting the exit.

Suivant un mode de réalisation tout particulièrement préféré, les parties de guidage sont conformées de manière à permettre au porte-joint de coulisser dans une direction parallèle à l'axe, mais avec possibilité de débattement dans la direction perpendiculaire à la plaque perforée, le porte-joint étant notamment un profilé en forme de U, l'âme du U portant les joints et les deux branches du U tournées vers la chambre intérieure pénétrant dans des rainures respectives du corps destinées à guider le porte-joint et plus profondes que la hauteur des branches. La présence de ces branches et rainures ne rend ainsi pas plus difficile le vissage du mors au corps lors de la fabrication. Le corps comporte des parties d'entretoisement des parties de guidage. On est sûr ainsi que le porte-joint conserve sa géométrie et sa position, même lorsque le dispositif de projection de jets est incliné par rapport à la verticale, ce qui est un cas fréquent lorsqu'il est disposé autour d'un cylindre. Les parties d'entretoisement peuvent être confondues avec les parties d'indexation.According to a very particularly preferred embodiment, the guide portions are shaped so as to allow the seal carrier to slide in a direction parallel to the axis, but with the possibility of movement in the direction perpendicular to the perforated plate, the door -Joint being in particular a U-shaped profile, the U core bearing the joints and the two branches of the U facing the inner chamber penetrating into respective grooves of the body to guide the seal holder and deeper than the height branches. The presence of these branches and grooves does not make it more difficult to screw the jaw to the body during manufacture. The body has spacer portions of the guide portions. One is sure that the seal holder maintains its geometry and its position, even when the jets jet device is inclined relative to the vertical, which is a common case when it is arranged around a cylinder. The bridging parts can be confused with the indexing parts.

Suivant un autre mode de réalisation, les parties de guidage sont des nervures qui ne sont ménagées que sur l'un des tronçons d'extrémité du porte-joint et qui coopèrent avec des rainures du corps, constituant les parties d'indexation et ménagées que sur une longueur correspondant sensiblement à celle des rainures.According to another embodiment, the guide portions are ribs which are formed only on one of the end portions of the seal holder and which cooperate with grooves of the body, constituting the indexing and arranged parts that over a length corresponding substantially to that of the grooves.

L'invention vise aussi un procédé de remplacement du joint d'un dispositif caractérisé en ce que

  • on retire successivement sans dévisser le mors du bloc du dispositif l'ensemble constitué du porte-joint et de la plaque perforée
  • hors du dispositif,
    • on sépare la plaque perforée du porte-joint
    • on enlève le joint usé du porte-joint
    • on met un joint neuf dans le porte-joint
    • on remet la plaque perforée sur le porte-joint de façon à reconstituer un ensemble nouveau
  • on remet l'ensemble nouveau en position exacte dans le dispositif en faisant coopérer les parties de guidage et d'indexation.
The invention also relates to a method for replacing the seal of a device characterized in that
  • the jaw of the device block is removed successively without unscrewing the assembly consisting of the seal carrier and the perforated plate
  • out of the device,
    • the perforated plate is separated from the seal holder
    • remove the worn gasket from the seal holder
    • put a new seal in the seal holder
    • the perforated plate is put back on the seal holder so as to reconstitute a new set
  • the new assembly is put back into exact position in the device by making the guiding and indexing parts cooperate.

Dans un mode de réalisation, les parties de guidage sont des nervures qui ne sont ménagées que sur l'un des tronçons d'extrémité du porte-joint et qui coopèrent avec des rainures du corps constituant les parties d'indexation et ménagées sur une longueur sensiblement correspondante à celle des rainures, et l'on remet l'ensemble nouveau en l'introduisant par ledit tronçon d'extrémité.In one embodiment, the guide portions are ribs which are provided only on one of the end sections of the seal holder and which cooperate with grooves of the body constituting the indexing portions and arranged over a length substantially corresponding to that of the grooves, and the new assembly is introduced by introducing it by said end section.

L'invention vise aussi une installation de liage de fibres en un non-tissé, comprenant un cylindre sur la face latérale duquel passent les fibres à lier et un dispositif suivant l'invention dont les jets sont dirigés sur la face latérale du cylindreThe invention also relates to a fiber binding system in a nonwoven, comprising a cylinder on the lateral face of which the fibers to be bonded and a device according to the invention whose jets are directed on the lateral face of the cylinder

Au dessin annexé, donné uniquement à titre d'exemple :

  • La figure 1 est une vue en coupe d'un dispositif préféré suivant l'invention suivant un plan perpendiculaire à l'axe de la chambre intérieure,
  • La figure 2 est une vue en coupe suivant la ligne II-II de la figure 1, et
  • La figure 3 est une vue en perspective partielle du porte-joint.
  • La figure 4 est une vue en coupe semblable à la figure 1 d'une variante et
  • La figure 5 est une vue en perspective du porte-joint de la variante de la figure 4.
In the attached drawing, given only by way of example:
  • The figure 1 is a sectional view of a preferred device according to the invention in a plane perpendicular to the axis of the inner chamber,
  • The figure 2 is a sectional view along line II-II of the figure 1 , and
  • The figure 3 is a partial perspective view of the seal carrier.
  • The figure 4 is a sectional view similar to the figure 1 a variant and
  • The figure 5 is a perspective view of the seal holder of the variant of the figure 4 .

Les figures 6 et 7 sont des vues en coupe de deux variantes.The figures 6 and 7 are sectional views of two variants.

En se reportant aux figures 1 à 3, le dispositif de projection de jets suivant l'invention comprend un corps 1 fixe parallélépipédique ayant deux grandes faces 2, 3 opposées, deux petites faces 4, 5 opposées, et deux faces 6 frontales opposées. Le corps 1 est en acier. Dans le corps 1 est forée une chambre 7 oblongue d'axe 8, qui va d'une face 6 frontale à l'autre. Dans les deux faces 6 frontales sont ménagés des raccords non représentés constituant une entrée communiquant avec une source d'eau sous pression qui n'est pas représentée. Dans la chambre 7, est disposé un filtre 9 cylindrique, de même forme que la chambre 7, mais de plus petit diamètre.Referring to Figures 1 to 3 , the jet projection device according to the invention comprises a parallelepipedal fixed body 1 having two large faces 2, 3 opposite, two small faces 4, 5 opposite, and two opposite end faces 6. The body 1 is made of steel. In the body 1 is drilled an oblong chamber 7 of axis 8, which goes from one face 6 to the other. In the two front faces 6 are provided not shown connectors constituting an inlet communicating with a source of pressurized water that is not shown. In the chamber 7, there is arranged a cylindrical filter 9, of the same shape as the chamber 7, but of smaller diameter.

La face 5 du corps est constituée de deux mors 10 qui sont vissés au reste du corps 1 par des vis 11.The face 5 of the body consists of two jaws 10 which are screwed to the rest of the body 1 by screws 11.

Un canal 12 en forme de fente s'étendant sur une génératrice ou sur deux génératrices adjacentes de la chambre 7, mène de la chambre 7 à une ouverture 13 en forme de fente ménagée dans la face 5 et débouchant à l'extérieur.A slot-shaped channel 12 extending on a generatrix or two adjacent generatrices of the chamber 7, leads from the chamber 7 to an opening 13 in the form of a slot formed in the face 5 and opening outwards.

Les mors 10 délimitent une cavité dans laquelle est logé un porte-joint 14 en métal, en matière plastique ou en matériau composite, composé d'une âme 15 d'une épaisseur de 5 mm et de deux branches 16, 17 latérales, formant des parties de guidage, s'étendant parallèlement à l'axe 8. Le porte-joint ménage d'une fente 18 longitudinale en regard du canal 12 et de la sortie 13. De part et d'autre de la fente 18, le porte-joint 14 comprend une rainure 19 tournée vers la chambre 7 et dans laquelle est logé un joint 20 annulaire. Sur la face opposée, le porte-joint 14 comporte une rainure 21 annulaire comme la rainure 19 et dans laquelle est logé un deuxième joint 22 annulaire. Le joint 20 est plus proche de la fente 18 que le joint 22. Sur la face comportant le joint 20, est posée une plaque 23 perforée et microperforations dont le diamètre est compris entre 50 et 500 microns et, de préférence, entre 100 et 200 microns, qui permet de former des jets ou aiguilles d'eau. Ces perforations sont disposées suivant une rangée ou deux rangées parallèlement à l'axe 8 et en regard de la fente 18.The jaws 10 delimit a cavity in which is housed a seal holder 14 made of metal, plastic or composite material, composed of a core 15 with a thickness of 5 mm and two lateral branches 16, 17, forming guide portions, extending parallel to the axis 8. The joint-holder has a longitudinal slot 18 in With respect to the channel 12 and the outlet 13. On either side of the slot 18, the seal holder 14 comprises a groove 19 facing the chamber 7 and in which is housed an annular seal 20. On the opposite face, the seal holder 14 comprises an annular groove 21 as the groove 19 and in which is housed a second annular seal 22. The seal 20 is closer to the slot 18 than the seal 22. On the face comprising the seal 20, is placed a perforated plate 23 and microperforations whose diameter is between 50 and 500 microns and preferably between 100 and 200 microns, which makes it possible to form jets or needles of water. These perforations are arranged in a row or two rows parallel to the axis 8 and facing the slot 18.

Les branches 16, 17 passent dans des rainures 24 ménagées dans le corps 1 et ce porte-joint 14 peut être sorti du dispositif, après qu'un bouchon 25 en a été retiré. Il en va de même de la plaque 23 perforée. La partie pleine du corps 1 entre les rainures 24 sert d'entretoise et maintient ainsi la forme du porte-joint 14 en dépit de sa minceur en l'empêchant de se refermer lorsqu'il est soumis aux forces de pression.The branches 16, 17 pass in grooves 24 formed in the body 1 and this seal holder 14 can be removed from the device, after a plug 25 has been removed. The same is true of the perforated plate 23. The solid part of the body 1 between the grooves 24 serves as a spacer and thus maintains the shape of the seal holder 14 despite its thinness by preventing it from closing when subjected to pressure forces.

Pour faciliter le montage du dispositif, les extrémités 25 libres des parties 16, 17 d'extrémité du porte-joint sont à distance du fond de rainures 24. Lorsque l'on visse les mors 10 sur la partie principale du bloc 1, le jeu qui subsiste entre les extrémités 25 des parties 16, 17 d'extrémité du porte-joint 14 et le bloc 1 permet d'effectuer le vissage sans danger de blocage.To facilitate the mounting of the device, the free ends 25 of the end portions 16, 17 of the seal carrier are at a distance from the bottom of grooves 24. When the jaws 10 are screwed onto the main part of the block 1, the set which remains between the ends 25 of the end portions 16, 17 of the seal holder 14 and the block 1 allows the screwing without danger of blocking.

Dans la variante représentée aux figures 4 et 5, le corps 101 comporte deux alésages 102 et 103 longitudinaux. Les deux alésages 102 et 103 sont séparés l'un de l'autre par une paroi 104 intermédiaire dans lesquelles sont ménagés des trous 105 de passage mettant en communication les alésages 102 et 103. En regard de ces trous de passage, il est prévu de l'autre côté de l'alésage 103, une fente 106 plus étroite pour la sortie du liquide. L'alésage 102 est alimenté en eau sous pression par une source qui n'est pas présentée. Une plaque 107 perforée et montée dans un porte-joint 108 cylindrique dont le diamètre extérieur est adapté au diamètre de la chambre 103 et qui peut coulisser le long de la chambre 103 un filtre 112 est monté au-dessus du porte-joint 108. Pour monter la plaque 107 perforée par l'intermédiaire d'une pièce 115 qui l'appuie sur le porte-joint 108, le porte-joint 108 cylindrique a une première fente 109 longitudinale qui s'étend dans la direction axiale du porte-joint 108 et qui a plus ou moins la largeur de la plaque 107 perforée. Dans le fond de la première fente 109 longitudinale est logé un joint 110 annulaire. Sur l'un des côtés frontal du porte-joint 108 cylindrique est prévu au moins dans la largeur de la plaque 107 porte-joint une fente 104 que l'on voit mieux à la figure 5 afin de pouvoir remplacer la plaque 107 porte-joint sans que le porte-joint 108 soit enlevé. Mais on peut aussi enlever le porte-joint 108 du dispositif de projection de jets d'eau en le faisant coulisser.In the variant shown in figures 4 and 5 the body 101 has two longitudinal bores 102 and 103. The two bores 102 and 103 are separated from each other by an intermediate wall 104 in which there are formed through holes 105 placing in communication the bores 102 and 103. Next to these through holes, it is intended to the other side of the bore 103, a narrower slot 106 for the outlet of the liquid. The bore 102 is supplied with water under pressure by a source that is not presented. A plate 107 perforated and mounted in a cylindrical seal holder 108 whose outer diameter is adapted to the diameter of the chamber 103 and which can slide along the chamber 103 a filter 112 is mounted above the seal carrier 108. mount the plate 107 perforated through a workpiece 115 which bears against the seal carrier 108, the cylindrical seal carrier 108 has a first longitudinal slot 109 which extends in the axial direction of the seal carrier 108 and which has more or less than the width of the perforated plate 107. In the bottom of the first longitudinal slot 109 is housed an annular seal 110. On one of the front sides of the cylindrical seal holder 108 is provided at least in the width of the plate 107 seal holder a slot 104 which is better seen at the figure 5 in order to be able to replace the plate 107 seal holder without the seal holder 108 is removed. But it can also remove the seal holder 108 of the water jet device by sliding.

Dans la prolongement de la fente 109 longitudinale, il est prévu sur le côté inférieur du porte-joint 108, une deuxième fente 101 longitudinale plus étroite de laquelle les jets de liquide produits par la plaque 107 perforée, arrive dans la fente 106 du corps 1.In the extension of the longitudinal slot 109, there is provided on the lower side of the seal holder 108, a narrower second longitudinal slot 101 from which the liquid jets produced by the perforated plate 107, arrives in the slot 106 of the body 1 .

Comme le montre la figure 5, le porte-joint 108 comprend deux nervures 116 qui ne s'étendent que sur un tronçon de sa longueur à partir de l'extrémité comportant la fente 104. Ces nervures 116 servent de parties de guidage et sont conjuguées avec des rainures ménagées dans le corps 101 et servant de parties d'indexation.As shown in figure 5 , the seal holder 108 comprises two ribs 116 which extend only over a portion of its length from the end having the slot 104. These ribs 116 serve as guide portions and are conjugated with grooves in the groove. body 101 and serving as indexing parts.

Pour monter le porte-joint 108 dans le corps 1, on l'engage par l'extrémité 113 dans le corps 1 jusqu'à ce que les rainures 120 coopèrent avec leur nervures 116. Le porte-joint 108 est ainsi fixé en position sans possibilité de tourner. Pour changer le joint, on retire le porte-joint 108 en le faisant coulisser parallèlement à son axe de la même façon que coulisse la plaque 107 perforée, on enlève le joint usé, on met un joint neuf, ces deux opérations s'effectuant sur l'établi sans être gêné et on remet le porte-joint 108 dans le corps 101.To mount the seal holder 108 in the body 1, it is engaged by the end 113 in the body 1 until the grooves 120 cooperate with their ribs 116. The seal holder 108 is thus fixed in position without possibility of turning. In order to change the seal, the seal holder 108 is removed by sliding it parallel to its axis in the same way as the perforated plate 107 slides, the worn seal is removed, a new seal is put in place, these two operations being carried out on the bench without being disturbed and the seal holder 108 is put back in the body 101.

Sous pression, le porte-joint aurait tendance à se refermer vers l'intérieur mais il en est empêché par le corps de sorte que la plaque perforée ne subit pas de contrainte mécanique du porte-joint. Elle n'est pas pincée par le porte-joint. L'entretoisement permet, lorsque le dispositif d'injection est sous pression, de centrer le porte-joint.Under pressure, the seal holder would tend to close inwards but it is prevented by the body so that the perforated plate does not undergo mechanical stress of the seal holder. It is not pinched by the seal holder. The bracing allows, when the injection device is under pressure, to center the seal holder.

A la figure 6, les moyens de maintien sont constitués par le fait que le porte-joint 621 comporte en section transversale deux boules 622 qui sont guidées dans le corps 605. La forme du porte-joint 621 est ainsi maintenue grâce au fait que les boules 622 sont engagées dans des cavités conjugées de retenue du mors 605.To the figure 6 , the holding means are constituted by the fact that the seal holder 621 comprises in cross section two balls 622 which are guided in the body 605. The shape of the seal holder 621 is thus maintained thanks to the fact that the balls 622 are engaged in cavities conjugate retainers of the jaw 605.

A la figure 7, il est prévu dans le mors 705, deux rainures 722 parallèles à l'axe du dispositif et dans lesquelles pénètrent deux nervures 723 du porte-joint 721.To the figure 7 , it is provided in the jaw 705, two grooves 722 parallel to the axis of the device and in which penetrate two ribs 723 of the seal holder 721.

Claims (10)

  1. Water jet spray device made up of basis components : a body (1), at least one clamp (10) and a perforated plate (23),
    - the clamp (10) being fixed to the body (1) in such a way as to keep the perforated plate (23), supported by a seal holder (14 or 621 or 721) held in position thereon and
    - the device comprising
    -- means (7-12) designated to spray water from the inside of the body (1) out through the perforated plate (23) and a longitudinal slot provided in the seal holder (14 or 621 or 721) and
    -- means for maintaining the shape of the seal holder (14 or 621 or 721)
    - in which the means for maintaining are formed by the body or the clamp itself,
    charaterized in that the maintaining means are formed as follows:
    - said seal holder (14) comprises two side arms (16,17) forming guide parts which extends in grooves (24) in said body(1) or
    - said seal holder (14) comprises in cross section two balls (622) which are engaged in complementary retaining cavities in the clamp (605), or
    - in the clamp (705) are provided two groves (722) parallel to the axis of the device with two ribs (723) projecting into them of the seal holder (721).
  2. Device according to Claim 1 characterized in that the maintaining means comprise a part of the body that forms a spacer for the seal holder (21).
  3. Device according to Claim 1, charaterized in that the maintaining means comprise a recess which is formed in the clamp and is complementary with a projection of the seal holder.
  4. Device according to Claim 1, characterized in that the seal holder (21) is mounted removably in the body and comprises, complementary with indexing parts formed in the body (1), guide parts so shaped as to allow the seal holder (21) to be slid parrallel to the axis of the body excactly into the same position in the body (1) after having been removed from it.
  5. Device according to Claim 4, characterized in that the guide parts are so shaped as to allox the seal holder to slide in a direction parallel to the axis but with the possibility of movement in the two directions perpendicular to the perforated plate (23).
  6. Device according to Claim 4 or 5, characterized in that tht guide parts are ribs (120) which engage with grooves in the body acting as the indexing parts, and are formed along only a length corresponding approximately to that of the grooves.
  7. Device according to one of the preceding claims, characterized in taht the seal holder is U shaped, the web of the U carrying the seals, and the two arms of the U pointing towards the inner chamber (7) fitting into respective grooves in the body designed to carry the seal holder.
  8. Device according to one of the preceding clais, characterized in taht the perforated plat (23) can be removed independently of the seal holder (21).
  9. Method of replacing the seal of a device according to the preceding claims, characterized in that in succession, without unscrewing the clamp from the body, the seal holder is withdrawn from the device, the worn seal is removed from the seal holder, a new seal is placed in the seal holder, and the seal holder is put back into the body exactly in position using the maintaining parts for guidance.
  10. Method according to Claim 9, characterized in that use is made of the guide parts which are formed on only one of the end parts of the seal holder and which fit into grooves in the body, having a length approximately equal to that of the grooves and the seal holder is put back by inserting it via this end part.
EP03718890A 2002-02-19 2003-02-18 Device for spraying water jets with removable seal support Expired - Lifetime EP1478468B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0202068A FR2836074B1 (en) 2002-02-19 2002-02-19 WATER JET PROJECTION DEVICE WITH REMOVABLE JOINT HOLDER
FR0202068 2002-02-19
PCT/FR2003/000518 WO2003070378A1 (en) 2002-02-19 2003-02-18 Device for spraying water jets with removable seal support

Publications (2)

Publication Number Publication Date
EP1478468A1 EP1478468A1 (en) 2004-11-24
EP1478468B1 true EP1478468B1 (en) 2008-08-27

Family

ID=27636297

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03718890A Expired - Lifetime EP1478468B1 (en) 2002-02-19 2003-02-18 Device for spraying water jets with removable seal support

Country Status (10)

Country Link
US (1) US7806349B2 (en)
EP (1) EP1478468B1 (en)
JP (1) JP4330999B2 (en)
CN (1) CN100379495C (en)
AT (1) ATE406213T1 (en)
AU (1) AU2003222926A1 (en)
DE (1) DE60323209D1 (en)
DK (1) DK1478468T3 (en)
FR (1) FR2836074B1 (en)
WO (1) WO2003070378A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005055939B3 (en) * 2005-11-24 2007-02-08 Fleissner Gmbh Nozzle crosspiece used in a device for producing a liquid jet comprises a pressure distribution chamber containing an impact body arranged over the length of a slot and not screwed to the crosspiece but inserted into it
DE102006004459B3 (en) * 2006-01-30 2007-06-21 Fleissner Gmbh O-ring assembly device for nozzle beam of liquid jets producing device, has releasing device with releasing unit, which is provided with contact surface, on one side, where surface is moved against O-ring in specific position of unit
FR2902035B1 (en) * 2006-06-13 2008-08-08 Rieter Perfojet Soc Par Action TOOL FOR PLACING A JOINT IN A THROAT, IN PARTICULAR FOR DEVICES FOR PROJECTING WATERJET
FR2902036B1 (en) * 2006-06-13 2008-08-08 Rieter Perfojet Soc Par Action PLATFORM TOOL FOR PLACING A JOINT IN A THRUST, IN PARTICULAR FOR A DEVICE
ES2322185T3 (en) * 2006-10-06 2009-06-17 Groz-Beckert Kg TOWNS STRIP FOR TEXTILE TREATMENT.
FR2941158B1 (en) * 2009-01-16 2014-07-18 Rieter Perfojet DEVICE FOR PROJECTING WATER JETS BY A CURVED PERFORATED PLATE
AU2010262755B2 (en) * 2009-06-17 2015-04-23 Spray Nozzle Engineering Pty Ltd Spray nozzle seal means
EP2301671B1 (en) * 2009-09-18 2012-06-06 Groz-Beckert KG Nozzle strip for a textile processing machine
CN103498289B (en) * 2013-09-29 2015-11-18 无锡纳润特科技有限公司 The type high pressure jet head of water thorn fixed network machine
CN103498288A (en) * 2013-09-29 2014-01-08 无锡众望四维科技有限公司 Spunlace head of spunlace fibermesh fixing machine
IT201600076150A1 (en) * 2016-07-20 2018-01-20 A C M Eng S R L Injector device for water jets

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Publication number Priority date Publication date Assignee Title
US3613999A (en) * 1970-04-29 1971-10-19 Du Pont Apparatus for jetting liquid onto fibrous material
US5042722A (en) * 1987-07-13 1991-08-27 Honeycomb Systems, Inc. Apparatus for jetting high velocity liquid streams onto fibrous materials
US4930657A (en) * 1988-12-08 1990-06-05 Walker William T Floatable drain plug
EP0725175B1 (en) * 1995-01-23 1999-03-24 FLEISSNER GmbH & Co. KG Maschinenfabrik Manifold in an apparatus for jetting high velocity liquid streams
DE19921694A1 (en) 1999-05-12 2000-11-16 Fleissner Maschf Gmbh Co Jet beam for fluid jet creating device, with removable insert in pressure distribution chamber

Also Published As

Publication number Publication date
US7806349B2 (en) 2010-10-05
DE60323209D1 (en) 2008-10-09
FR2836074B1 (en) 2004-12-24
DK1478468T3 (en) 2008-11-24
CN100379495C (en) 2008-04-09
EP1478468A1 (en) 2004-11-24
ATE406213T1 (en) 2008-09-15
JP2005517528A (en) 2005-06-16
AU2003222926A1 (en) 2003-09-09
JP4330999B2 (en) 2009-09-16
FR2836074A1 (en) 2003-08-22
US20050139700A1 (en) 2005-06-30
CN1635930A (en) 2005-07-06
WO2003070378A1 (en) 2003-08-28

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