EP1478468A1 - Device for spraying water jets with removable seal support - Google Patents

Device for spraying water jets with removable seal support

Info

Publication number
EP1478468A1
EP1478468A1 EP03718890A EP03718890A EP1478468A1 EP 1478468 A1 EP1478468 A1 EP 1478468A1 EP 03718890 A EP03718890 A EP 03718890A EP 03718890 A EP03718890 A EP 03718890A EP 1478468 A1 EP1478468 A1 EP 1478468A1
Authority
EP
European Patent Office
Prior art keywords
seal
seal holder
perforated plate
holder
grooves
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.)
Granted
Application number
EP03718890A
Other languages
German (de)
French (fr)
Other versions
EP1478468B1 (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
Original Assignee
Rieter Perfojet SAS
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 Rieter Perfojet SAS filed Critical Rieter Perfojet SAS
Publication of EP1478468A1 publication Critical patent/EP1478468A1/en
Application granted granted Critical
Publication of EP1478468B1 publication Critical patent/EP1478468B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 projecting water jets, useful in particular for the hydraulic bonding of fibers in nonwovens.
  • This bonding consists of sending a curtain of pressurized water jets over a sheet of fibers to entangle them and form them into a coherent sheet, without requiring the use of binder or resin.
  • EP-07 251 75 describes a device for projecting water jets comprising a body resistant to pressure and delimiting an interior chamber.
  • the oblong cylindrical inner chamber has an inlet and, preferably, two inlets respectively on its front faces and communicates, with the interposition of a perforated plate, with an outlet opening to the outside of the body.
  • the perforated plate is in contact with a seal.
  • a repair groove the height of which corresponds to slightly more than the thickness of the seal and a longitudinal sheet can be inserted into this repair groove, this longitudinal sheet having, on the underside, a seal tightening device.
  • a seal carrier of circular cross section is provided for this purpose which also carries the perforated plate.
  • the seals At the factory, we 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 out, moreover it is emphasized that this rarely occurs, it is easily replaced as described in EP-0 725 175. Experience has shown that carrying out these operations of replacing the seal is an operation which requires too much skill to be performed in a short time, especially for very long joints of several meters.
  • a device for projecting water jets having a removable cassette in a body and comprising a perforated plate, a seal holder and a bracing piece.
  • the cassette is large and requires consequence of drilling a large hole in the body, which is not desirable from the point of view of the resistance to pressure and the replacement of the perforated plate and / or the seal holder is complicated, since it is necessary unscrew the spacer to access the perforated plate.
  • the invention overcomes these drawbacks by a device in which the replacement of the seal can be carried out, in a safe manner and in a short time, even by an inexperienced operator and in which the number of parts is reduced and less damage is done to the integrity of the body.
  • the subject of the invention is a device for projecting water jets, formed of basic constituent elements: a body at least one jaw and a perforated plate, the jaw being fixed to the body so as to retain the supported perforated plate therein. by a seal holder, the device comprising means intended to project water from the inside of the body to the outside through the perforated plate and means for maintaining the shape of the seal holder, characterized in that the holding means are formed by one and the same basic constituent elements.
  • the perforated plate is mounted so that it can be removed from the body independently of the seal holder. When you only need to replace the perforated plate, you can 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 faces of the seal holder. These are preferably rectangular joints with rounded tops.
  • the seal holder has the form 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 through the exit.
  • the guide parts 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 carrier - joint being in particular a U-shaped profile, the core of the U carrying the joints and the two branches of the U facing the interior chamber penetrating into respective grooves of the body intended to guide the joint carrier and deeper than the height branches.
  • the presence of these branches and grooves does not therefore make it more difficult to screw the jaw to the body during manufacture.
  • the body has bracing parts for guide parts. It is thus certain that the seal holder retains its geometry and its position, even when the jet projection device is inclined relative to the vertical, which is a frequent case when it is arranged around a cylinder.
  • the bracing parts can be confused with the indexing parts.
  • the guide parts are ribs which are formed only on one of the end sections of the seal carrier and which cooperate with grooves in the body, constituting the indexing parts and formed as over a length substantially corresponding to that of the grooves.
  • the invention also relates to a method of replacing the seal of a device, characterized in that the jaw of the block of the device is successively removed without unscrewing the assembly consisting of the seal holder and the perforated plate outside the device, the perforated plate of the seal holder we remove the worn seal from the seal holder we put a new seal in the seal holder we put the perforated plate on the seal holder so as to reconstitute a new set we put the new set in position exact in the device by making the guide and indexing parts cooperate.
  • the guide parts are ribs which are formed only on one of the end sections of the seal carrier and which cooperate with grooves of the body constituting the indexing parts and formed over a length substantially corresponding to that of the grooves, and the new assembly is replaced by introducing it through said end section.
  • the invention also relates to an installation for binding fibers in a nonwoven, comprising a cylinder on the side face from which the fibers to be bound pass and a device according to the invention, the jets of which are directed on the side face of the cylinder
  • FIG. 1 is a sectional view of a preferred device according to the invention along a plane perpendicular to the axis of the interior chamber
  • FIG. 2 is a sectional view along line II-II of FIG. 1, and
  • Figure 3 is a partial perspective view of the seal holder.
  • Figure 4 is a sectional view similar to Figure 1 of a variant and
  • FIG. 5 is a perspective view of the seal carrier of the variant of FIG. 4.
  • Figures 6 to 8 are sectional views of three variants.
  • the device for projecting jets according to the invention comprises a fixed parallelepiped body 1 having two opposite large faces 2, 3, two opposite small faces 4, 5, and two opposite frontal faces 6.
  • the body 1 is made of steel.
  • fittings constituting an inlet communicating with a source of pressurized water which is not shown.
  • a cylindrical filter 9 is arranged, 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 carrier 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 parts, extending parallel to the axis 8.
  • the seal holder provides a longitudinal slot 18 in view of 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.
  • the seal carrier 14 On the opposite face, the seal carrier 14 has an annular groove 21 like 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.
  • the branches 16, 17 pass through grooves 24 formed in the body 1 and this seal holder 24 can be removed from the device, after a plug 25 has been removed therefrom.
  • 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 in spite of its thinness, preventing it from closing again when it is subjected to the pressure forces.
  • the free ends 25 of the end portions 16, 17 of the seal carrier are spaced from the bottom of grooves 24.
  • the body 101 has two longitudinal bores 102 and 103.
  • the two bores 1 02 and 103 are separated from each other by an intermediate wall 104 in which are provided passage holes 105 bringing the bores 102 and 103 into communication.
  • passage holes 105 provision is made on the other side of the bore 103, a narrower slot 106 for the outlet of the liquid.
  • the bore 102 is supplied with pressurized water by a source which is not shown.
  • the cylindrical seal holder 108 To mount the plate 107 perforated by means of a part 115 which presses it on the seal holder 108, the cylindrical seal holder 108 has a first longitudinal slot 109 which extends in the axial direction of the seal holder 108 and which has more or less 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
  • seal holder a slot 104 which is best seen in FIG. 5 in order to be able to replace the seal holder plate 107 without the seal holder 108 being removed.
  • the seal carrier 108 comprises two ribs 116 which extend only over a section of its length from the end comprising the slot 104. These ribs 11 16 serve as guide parts and are conjugated with grooves made in the body 101 and serving as indexing parts.
  • 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, these two operations being carried out on the workbench without being bothered and we put back the seal holder
  • the seal holder Under pressure, the seal holder would tend to close inward, but it is prevented by the body so that the perforated plate does not undergo mechanical stress from the seal holder. It is not pinched by the seal holder.
  • the spacer allows, when the injection device is under pressure, to center the seal carrier.
  • the holding means consist of 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 622 balls are engaged in cavities jaw retainer 605.
  • FIG. 7 there are provided in the jaw 705, two grooves 722 parallel to the axis of the device and into which two ribs 723 of the seal holder 721 penetrate.
  • FIG. 8 it is the perforated plate 823 itself which serves as a spacer for the seal holder 821.
  • the perforated plate 823 and the seal holder 821 are taken out of the device together and removed from the workbench , the perforated plate 823, if necessary by separating the two end parts of the seal holder 821.
  • This embodiment is the simplest. But in spite of this, it is not preferred because, on the one hand, the replacement of the seal carrier is more complicated and because, on the other hand, it subjects the seal carrier plate to harmful stresses.

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

Dispositif de projection de jets d'eau à porte-joint amovibleWater jet projection device with removable seal holder
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 projecting water jets, useful in particular for the hydraulic bonding of fibers in nonwovens. This bonding consists of sending a curtain of pressurized water jets over 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.EP-07 251 75 describes a device for projecting water jets comprising a body resistant to pressure and delimiting an interior chamber. The oblong cylindrical inner chamber has an inlet and, preferably, two inlets respectively on its front faces and communicates, with the interposition of a perforated plate, with an outlet opening to the outside of 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 perform tedious unscrewing for disassembly, there is provided, over the entire length and over the entire width of a groove for receiving the seal, a repair groove the height of which corresponds to slightly more than the thickness of the seal and a longitudinal sheet can be inserted into this repair groove, this longitudinal sheet having, on the underside, a seal tightening device. To replace the seal that we removed as best we can, we put the sheet with a new seal in the repair groove and using a tool, we roll the new seal down where it must slide in the groove intended for it. In DE-A-199 21 694, the device described in EP-0 725 175 is improved in order to simplify assembly. A seal carrier of circular cross section is provided for this purpose which also carries the perforated plate. At the factory, we 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 out, moreover it is emphasized that this rarely occurs, it is easily replaced as described in EP-0 725 175. Experience has shown that carrying out these operations of replacing the seal is an operation which requires too much skill to be performed in a short time, especially for very long joints of several meters.
Au US-A 504 2 722, 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.In US-A 504 2,722, a device for projecting water jets is described having a removable cassette in a body and comprising a perforated plate, a seal holder and a bracing piece. As in the previous documents, the cassette is large and requires consequence of drilling a large hole in the body, which is not desirable from the point of view of the resistance to pressure and the replacement of the perforated plate and / or the seal holder is complicated, since it is necessary unscrew the spacer 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. 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, caractérisé en ce que les moyens de maintien sont formés par l'un même des éléments constitutifs de base.The invention overcomes these drawbacks by a device in which the replacement of the seal can be carried out, in a safe manner and in a short time, even by an inexperienced operator and in which the number of parts is reduced and less damage is done to the integrity of the body. The subject of the invention is a device for projecting water jets, formed of basic constituent elements: a body at least one jaw and a perforated plate, the jaw being fixed to the body so as to retain the supported perforated plate therein. by a seal holder, the device comprising means intended to project water from the inside of the body to the outside through the perforated plate and means for maintaining the shape of the seal holder, characterized in that the holding means are formed by one and the same basic constituent elements.
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, put it on the workbench, easily remove the old damaged seal without having to remove a spacer beforehand and put it, also in all facilitated because we have good access above the joint holder which is flat on the workbench and without being bothered by the fact that we would be in a reduced space inside the body, a new seal. Once these operations have been carried out, the seal carrier with the seal is replaced in place 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. Pour mieux assurer etanchéité, 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. 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 perforated plate is mounted so that it can be removed from the body independently of the seal holder. When you only need to replace the perforated plate, you can leave the seal holder in place. For better sealing, 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 faces of the seal holder. These are preferably rectangular joints with rounded tops. Preferably, the seal holder has the form 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 through 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 parts 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 carrier - joint being in particular a U-shaped profile, the core of the U carrying the joints and the two branches of the U facing the interior chamber penetrating into respective grooves of the body intended to guide the joint carrier and deeper than the height branches. The presence of these branches and grooves does not therefore make it more difficult to screw the jaw to the body during manufacture. The body has bracing parts for guide parts. It is thus certain that the seal holder retains its geometry and its position, even when the jet projection device is inclined relative to the vertical, which is a frequent case when it is arranged around a cylinder. The bracing 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 parts are ribs which are formed only on one of the end sections of the seal carrier and which cooperate with grooves in the body, constituting the indexing parts and formed as over a length substantially corresponding 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. 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. 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 method of replacing the seal of a device, characterized in that the jaw of the block of the device is successively removed without unscrewing the assembly consisting of the seal holder and the perforated plate outside the device, the perforated plate of the seal holder we remove the worn seal from the seal holder we put a new seal in the seal holder we put the perforated plate on the seal holder so as to reconstitute a new set we put the new set in position exact in the device by making the guide and indexing parts cooperate. In one embodiment, the guide parts are ribs which are formed only on one of the end sections of the seal carrier and which cooperate with grooves of the body constituting the indexing parts and formed over a length substantially corresponding to that of the grooves, and the new assembly is replaced by introducing it through said end section. The invention also relates to an installation for binding fibers in a nonwoven, comprising a cylinder on the side face from which the fibers to be bound pass and a device according to the invention, the jets of which are directed on the side 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,In the accompanying drawing, given solely by way of example: FIG. 1 is a sectional view of a preferred device according to the invention along a plane perpendicular to the axis of the interior chamber,
La figure 2 est une vue en coupe suivant la ligne ll-ll de la figure 1 , etFIG. 2 is a sectional view along line II-II of FIG. 1, and
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 etFigure 3 is a partial perspective view of the seal holder. Figure 4 is a sectional view similar to Figure 1 of a variant and
La figure 5 est une vue en perspective du porte-joint de la variante de la figure 4.FIG. 5 is a perspective view of the seal carrier of the variant of FIG. 4.
Les figures 6 à 8 sont des vues en coupe de trois variantes. En se reportant aux figures 1 à 3, le dispositif de projection de jets suivant l'invention comprend un corps 1 fixe parallélépipedique 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.Figures 6 to 8 are sectional views of three variants. Referring to FIGS. 1 to 3, the device for projecting jets according to the invention comprises a fixed parallelepiped body 1 having two opposite large faces 2, 3, two opposite small faces 4, 5, and two opposite frontal faces 6. The body 1 is made of steel. In the body 1 is drilled an oblong chamber 7 with an axis 8, which goes from one front face 6 to the other. In the two front faces 6 are formed not shown fittings constituting an inlet communicating with a source of pressurized water which is not shown. In the chamber 7, a cylindrical filter 9 is arranged, 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 1 1 .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. 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.A slit-shaped channel 12 extending over one generator or over two adjacent generators of the chamber 7, leads from the chamber 7 to a slot-shaped opening 13 formed in the face 5 and opening to the outside. The jaws 10 delimit a cavity in which is housed a seal carrier 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 parts, extending parallel to the axis 8. The seal holder provides a longitudinal slot 18 in view of 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 carrier 14 has an annular groove 21 like 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 24 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. 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.The branches 16, 17 pass through grooves 24 formed in the body 1 and this seal holder 24 can be removed from the device, after a plug 25 has been removed therefrom. The same applies to 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 in spite of its thinness, preventing it from closing again when it is subjected to the pressure forces. To facilitate mounting of the device, the free ends 25 of the end portions 16, 17 of the seal carrier are spaced from the bottom of grooves 24. When the jaws 10 are screwed onto the main part of block 1, the clearance which remains between the ends 25 of the end portions 16, 17 of the seal carrier 14 and the block 1 makes it possible to carry out 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 1 02 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 1 12 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 plaqueIn the variant shown in Figures 4 and 5, the body 101 has two longitudinal bores 102 and 103. The two bores 1 02 and 103 are separated from each other by an intermediate wall 104 in which are provided passage holes 105 bringing the bores 102 and 103 into communication. With regard to these passage holes, provision is made on the other side of the bore 103, a narrower slot 106 for the outlet of the liquid. The bore 102 is supplied with pressurized water by a source which is not shown. A plate 107 perforated and mounted in a cylindrical joint holder 108 whose outside diameter is adapted to the diameter of the chamber 103 and which can slide along the chamber 103 a filter 11 is mounted above the joint holder 108. To mount the plate 107 perforated by means of a part 115 which presses it on the seal holder 108, the cylindrical seal holder 108 has a first longitudinal slot 109 which extends in the axial direction of the seal holder 108 and which has more or less 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 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.107 seal holder a slot 104 which is best seen in FIG. 5 in order to be able to replace the seal holder plate 107 without the seal holder 108 being removed. However, it is also possible to remove the seal holder 108 from the device for projecting water jets by sliding it.
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. 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 1 16 servent de parties de guidage et sont conjuguées avec des rainures ménagées dans le corps 101 et servant de parties d'indexation. Pour monter le porte-joint 108 dans le corps 1 , on l'engage par l'extrémité 1 13 dans le corps 1 jusqu'à ce que les rainures 120 coopèrent avec leur nervures 1 16. 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-jointIn the extension of the longitudinal slot 109, there is provided on the lower side of the seal carrier 108, a second narrower longitudinal slot 101 from which the jets of liquid produced by the perforated plate 107, arrives in the slot 106 of the body 1 As shown in FIG. 5, the seal carrier 108 comprises two ribs 116 which extend only over a section of its length from the end comprising the slot 104. These ribs 11 16 serve as guide parts and are conjugated with grooves made in the body 101 and serving as indexing parts. To mount the seal holder 108 in the body 1, it is engaged by the end 1 13 in the body 1 until the grooves 120 cooperate with their ribs 1 16. The seal holder 108 is thus fixed in position without possibility of turning. 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, these two operations being carried out on the workbench without being bothered and we put back the seal holder
108 dans le corps 101.108 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 inward, but it is prevented by the body so that the perforated plate does not undergo mechanical stress from the seal holder. It is not pinched by the seal holder. The spacer allows, when the injection device is under pressure, to center the seal carrier.
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.In FIG. 6, the holding means consist of 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 622 balls are engaged in cavities jaw retainer 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. Enfin, à la figure 8, c'est la plaque 823 perforée elle-même qui sert d'entretoise au porte-joint 821. Dans ce cas, pour remplacer le porte-joint, on sort ensemble la plaque perforée 823 et le porte-joint 821 du dispositif et l'on enlève, sur l'établi, la plaque 823 perforée, le cas échéant en écartant les deux parties d'extrémité du porte-joint 821. Ce mode de réalisation est le plus simple. Mais en dépit de cela, il n'est pas préféré parce que, d'une part le remplacement du porte-joint est plus compliqué et parce que, d'autre part, il fait subir à la plaque porte-joint des contraintes néfastes. In FIG. 7, there are provided in the jaw 705, two grooves 722 parallel to the axis of the device and into which two ribs 723 of the seal holder 721 penetrate. Finally, in FIG. 8, it is the perforated plate 823 itself which serves as a spacer for the seal holder 821. In this case, to replace the seal holder, the perforated plate 823 and the seal holder 821 are taken out of the device together and removed from the workbench , the perforated plate 823, if necessary by separating the two end parts of the seal holder 821. This embodiment is the simplest. But in spite of this, it is not preferred because, on the one hand, the replacement of the seal carrier is more complicated and because, on the other hand, it subjects the seal carrier plate to harmful stresses.

Claims

REVENDICATIONS
1. Dispositif de projection de jets d'eau, formé d'éléments constitutifs de base : un corps (1) au moins un mors (10) et une plaque (23) perforée, le mors (10) étant fixé au corps (1) de manière à y retenir la plaque (23) perforée soutenue par un porte-joint (21), le dispositif comprenant des moyens (7, 12) destinés à projeter de l'eau de l'intérieur du corps (1) à l'extérieur à travers la plaque (23) perforée et des moyens de maintien de la forme du porte-joint (23), caractérisé en ce que les moyens de maintien sont formés par l'un même des éléments (1 , 10, 23) constitutifs de base.1. Device for projecting water jets, formed of basic constituent elements: a body (1) at least one jaw (10) and a perforated plate (23), the jaw (10) being fixed to the body (1 ) so as to retain the perforated plate (23) supported by a seal holder (21), the device comprising means (7, 12) intended to spray water from inside the body (1) to the exterior through the perforated plate (23) and means for retaining the shape of the seal holder (23), characterized in that the retaining means are formed by one of the same elements (1, 10, 23) basic components.
2. Dispositif suivant la revendication 1 , caractérisé en ce que les moyens de maintien comprennent une partie du corps qui forme entretoise pour le porte-joint (21)2. Device according to claim 1, characterized in that the holding means comprise a part of the body which forms a spacer for the seal carrier (21)
3. Dispositif suivant la revendication 1 , caractérisé en ce que les moyens de maintien comprennent un évidement ménagé dans le mors et conjugué d'une saillie du porte-joint.3. Device according to claim 1, characterized in that the holding means comprise a recess formed in the jaw and conjugated with a projection of the seal holder.
4. Dispositif suivant la revendication 1 , caractérisé en ce que les moyens de maintien comprennent la plaque (23) perforée qui forme entretoise pour le porte-joint.4. Device according to claim 1, characterized in that the holding means comprise the perforated plate (23) which forms a spacer for the seal carrier.
5. Dispositif suivant la revendication 1 , caractérisé en ce que le porte-joint (21) est monté d'une manière amovible dans le corps et comporte, conjugués de parties d'indexation ménagées dans le corps (1), des parties de guidage conformées de manière à permettre au porte-joint (21) d'être mis par coulissement parallèlement à l'axe du corps exactement dans la même position dans le corps (1) après en avoir été retiré.5. Device according to claim 1, characterized in that the seal carrier (21) is removably mounted in the body and comprises, combined with indexing parts formed in the body (1), guide parts shaped so as to allow the seal carrier (21) to be slidably parallel to the axis of the body in exactly the same position in the body (1) after being removed therefrom.
6. Dispositif suivant la revendication 5, caractérisé en ce que 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 (23) perforée,6. Device according to claim 5, characterized in that the guide parts 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 plate (23 ) perforated,
7. Dispositif suivant la revendication 5 ou 6, caractérisé en ce que les parties de guidage sont des nervures (120) qui ne sont ménagées que sur l'un des tronçons d'extrémité du porte-joint et qui coopère avec des rainures du corps, constituant les parties d'indexation et ménagées que sur une longueur correspondant sensiblement à celle des rainures.7. Device according to claim 5 or 6, characterized in that the guide parts are ribs (120) which are formed only on one of the end sections of the seal holder and which cooperates with grooves in the body , constituting the indexing parts and formed only over a length substantially corresponding to that of the grooves.
8. Dispositif suivant l'une des revendications précédentes, caractérisé en ce que le porte-joint est en forme de U l'âme du U portant les joints, et les deux branches du U tournées vers la chambre (7) intérieure pénétrant dans des rainures respectives du corps destiné à porter le porte- joint. 8. Device according to one of the preceding claims, characterized in that the seal carrier is U-shaped, the core of the U carrying the seals, and the two branches of the U facing the inner chamber (7) penetrating into respective grooves of the body intended to carry the seal carrier .
9. Dispositif suivant l'une des revendications précédentes, caractérisé en ce que la plaque (23) perforée est montée amovible indépendamment du porte-joint (21).9. Device according to one of the preceding claims, characterized in that the perforated plate (23) is removably mounted independently of the seal holder (21).
10. Procédé de remplacement du joint d'un dispositif suivant les revendications précédentes, caractérisé en ce que - on retire successivement sans dévisser le mors du corps, le porte-joint, hors du dispositif, on enlève le joint usé du porte-joint, on met un joint neuf dans le porte-joint et on remet le porte-joint dans le corps en position exacte en utilisant les parties de maintien pour le guidage.10. Method for replacing the seal of a device according to the preceding claims, characterized in that - successively withdraws without unscrewing the jaw from the body, the seal holder, outside the device, the worn seal is removed from the seal holder, a new seal is put in the seal holder and the seal holder is put back into the body in exact position using the holding parts for guiding.
11. Procédé suivant la revendication 10, caractérisé en ce que l'on utilise des parties de guidage qui ne sont ménagées que sur l'un des tronçons d'extrémité du porte-joint et qui coopèrent avec des rainures du corps en ayant une longueur sensiblement correspondante à celle des rainures et l'on remet le porte-joint en l'introduisant par ce tronçon d'extrémité. 11. Method according to claim 10, characterized in that one uses guide parts which are provided only on one of the end sections of the seal carrier and which cooperate with grooves of the body having a length substantially corresponding to that of the grooves and the seal carrier is replaced by introducing it through this end section.
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)

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

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EP03718890A Expired - Lifetime EP1478468B1 (en) 2002-02-19 2003-02-18 Device for spraying water jets with removable seal support

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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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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
DE502006003337D1 (en) * 2006-10-06 2009-05-14 Groz Beckert Kg Nozzle strips for textile processing
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
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AU2003222926A1 (en) 2003-09-09
JP4330999B2 (en) 2009-09-16
EP1478468B1 (en) 2008-08-27
DK1478468T3 (en) 2008-11-24
US7806349B2 (en) 2010-10-05
FR2836074A1 (en) 2003-08-22
US20050139700A1 (en) 2005-06-30
JP2005517528A (en) 2005-06-16
WO2003070378A1 (en) 2003-08-28
CN100379495C (en) 2008-04-09
ATE406213T1 (en) 2008-09-15
DE60323209D1 (en) 2008-10-09
CN1635930A (en) 2005-07-06
FR2836074B1 (en) 2004-12-24

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