EP0877115B1 - Dispositif d'aspiration - Google Patents

Dispositif d'aspiration Download PDF

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Publication number
EP0877115B1
EP0877115B1 EP98107580A EP98107580A EP0877115B1 EP 0877115 B1 EP0877115 B1 EP 0877115B1 EP 98107580 A EP98107580 A EP 98107580A EP 98107580 A EP98107580 A EP 98107580A EP 0877115 B1 EP0877115 B1 EP 0877115B1
Authority
EP
European Patent Office
Prior art keywords
screening cylinder
suction
suction device
web
screen cylinder
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
Application number
EP98107580A
Other languages
German (de)
English (en)
Other versions
EP0877115A2 (fr
EP0877115A3 (fr
Inventor
Wolfgang Kurschatke
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.)
Eduard Kuesters Maschinenfabrik GmbH and Co KG
Original Assignee
Eduard Kuesters Maschinenfabrik GmbH and Co KG
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 Eduard Kuesters Maschinenfabrik GmbH and Co KG filed Critical Eduard Kuesters Maschinenfabrik GmbH and Co KG
Publication of EP0877115A2 publication Critical patent/EP0877115A2/fr
Publication of EP0877115A3 publication Critical patent/EP0877115A3/fr
Application granted granted Critical
Publication of EP0877115B1 publication Critical patent/EP0877115B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B15/00—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours
    • D06B15/04—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours by suction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/24—Arrangements of devices using drying processes not involving heating
    • F26B13/30—Arrangements of devices using drying processes not involving heating for applying suction

Definitions

  • the invention relates to a suction device of the preamble of Claim 1 corresponding type.
  • Such a suction device is known from DE-OS 2 403 815, Fig. 1.
  • the resulting from the only schematic representation in DE-OS 2 403 815 Suction device is used to drain a carpet sheet Suction from the pole side.
  • the tubular or tubular, in its Cross-section reformable screen cylinder is formed by a screen belt and runs across the suction chamber in such a way that in the area of the suction chamber The web and the belt are moved at the same speed.
  • the Sieve belt supports the web against the force of the suction over the Suction slot and prevents the web from being drawn into the suction slot becomes.
  • the screen belt causes the web can be guided largely without force over the suction slot, insofar as the Goods web not on the wall parts of the wall defining the suction slot Suction chamber rests and be moved against the resulting friction got to.
  • the web is, as it were, from the screen belt carried the suction slit and does not have to be dragged across the suction slit become.
  • the screen cylinder is an endlessly rotating one Screen belt, which is guided under longitudinal tension over three deflection rollers is.
  • the developed length of a such a sieve belt if the same has sufficient lateral guidance should be possible, at least one and a half times the width of the screen belt must be. This results in a certain space requirement in the longitudinal direction the web.
  • Such a sieve belt if a clean one lateral guidance should be possible, have a certain minimum wire size. Due to the length of the sieve belt and the necessary number of deflection rollers as well as the need for page history control a fairly high structural and spatial effort for a functional Suction device of this type.
  • the invention has for its object an improved suction device of the type in question.
  • screen cylinder is meant here in a mathematical sense, i.e. it is a tubular or tubular fabric generatrix parallel to a straight line. However, the fabric has no unchangeable cross-section, but is easily deformable.
  • shape stability of the screen cylinder according to the invention should be such that it does can just stand up on his own, but that he can do it by hand in his Cross section is easily compressible.
  • the sieve cylinder should be at his Circulation can deform a little, but without as in the known Screen belt suction device under longitudinal tension around deflection rollers to be led.
  • support density should be the number of wire mesh support points per unit area be meant. In principle, it would also be possible to determine the opening percentage to enlarge by a very wide-meshed wire mesh. Such one Wire mesh, however, would serve as a support for the web can no longer meet in the area of the suction slot
  • the wire mesh suitably consists of a corrosion-resistant steel.
  • the screen cylinder in the invention rests under the web during operation the wall parts of the suction chamber delimiting the suction slot.
  • a swinging of the screen cylinder during the movement across the suction slot to prevent, are means for supporting the screen cylinder against such Inclination provided according to claim 2
  • at least one support roller include, which abuts the screen cylinder.
  • such a support roller can be used both inside and outside of the screen cylinder.
  • the support roller is located inside the screen cylinder, in particular in the double arrangement described in claims 3 and 4.
  • An important characteristic is the certain low "tightness" of the leadership of the screen cylinder via the suction slot and the at least one inner one Supporting role.
  • the one extreme that should not be reached is that the screen cylinder is tight around the suction slot and the guide roller is, as is the case with the screen belt according to FIG. 1 of DE-OS 2 403 185 is.
  • the other extreme, which should also not be reached, is one completely tension-free guidance in a circle around the suction slot and the Support roller, which would result in practically zero bearing power on the support roller.
  • the "tightness" according to the invention should lie between these extremes, i.e.
  • the screen cylinder should be essentially loose, but both on the suction slot as well as on the guide roller or rollers with a certain Radial tension are present, which causes a slight deformation of the screen cylinder and a small wrap angle of the same both in the area of Suction slot as well as on the guide roller or rollers.
  • a support roller located inside the screen cylinder with a dewatering roller located outside the screen cylinder form a nip which serves to remove the surface water from the web to remove before the web after covering a circumferential distance reached the suction slot on the outside of the screen cylinder.
  • the ballast can recommend an spreader roller according to claim 7.
  • the first of these modes of operation (claim 8) provides that the rotation of the Sieve cylinders around themselves caused solely by the web will, in turn, with guidance and transport means on the suction device is led past and especially in the area of the suction slot below a certain pressure rests on the screen cylinder and this through the can take appropriate friction. The entrainment does not lead to a major one Longitudinal tension in the web. It was found that by the activation of a screen cylinder of the type according to the invention for the Pulling the web past the suction slit required up to to be reduced to a sixth of the force that would be required if the web would be drawn over the suction slot without a screen cylinder.
  • the other basic mode of operation of the suction device according to the invention provides a drive for the or one of the support rollers (claim 9).
  • the support roller is smooth on its circumference and is below a certain slight Friction on the inner circumference of the screen cylinder, caused by the above discussed "low slackness" results.
  • By driving the screen cylinder the tension in the web can practically be reduced to zero when the drive speed of the web speed is precisely adjusted. This can be used for delicate knitwear and knitwear Be meaningful.
  • At least one of the support rollers One end has a radial collar on which the screen cylinder can come to rest with its front edge there.
  • the suction device designated 100 as a whole in FIG. 1 serves to dehumidify or drain an air-permeable Toobahn W. It comprises a screen cylinder 10, which has a length of up to 3.6 m and a transverse dimension of Can have 300 to 450 mm and from a wire mesh 11 (Fig. 4), which is shown in Figs. 1 and 3 by one Dashing should be indicated and its properties still to be described.
  • the length extends through the screen cylinder 10 a suction chamber designated as a whole by 20, which in the 1 apparent from angled sheet metal profiles 21 is joined together and an octagonal inner cross section has whose "diameter" in the embodiment about 40% of the diameter of the screen cylinder Is 10.
  • the suction chamber 20 forms one to be described Way, a suction slot 40, which is located in Fig. 1 above is.
  • the limits of the suction slot 20 consist of Sliders 31 made of a suitable plastic.
  • the screen cylinder 10 slides across the length of the screen cylinder 10 reaching suction slot 40 over the sliders 31, 31.
  • Inside the screen cylinder 10 are symmetrical arranged to the suction slot 40 two support rollers 1, 2, the axially outside of the screen cylinder 10 in Machine frame are stored and on the inner circumference of the Roll off the screen cylinder 10.
  • In the embodiment form the through the axes of the support rollers 1, 2 and Axis A of the suction chamber 20 planes an angle of about 150 ° with each other.
  • the distance from the mouth of the Suction slot 40 to axis A and the distance from the lines of contact of the screen cylinder 10 on the outer circumference of the Support rollers 1, 2 to axis A are approximately the same.
  • the screen cylinder 10 is through the support in the area of the suction slot 40 and on the two support rollers 1, 2 in the middle guided on a kind of three-point bearing.
  • the fabric web W in the exemplary embodiment a knitted fabric web, comes wet from a treatment bath from below and runs at 13 on the outer circumference of the screen cylinder on.
  • the web W then runs over an approximately 90 ° Circumferential portion of the screen cylinder 10 before reached the suction slot 40, at which by a to the Suction chamber 20 connected pump air through the web W is sucked through, the moisture contained therein takes away, which can be removed from the suction chamber 20.
  • the support in the area of the suction slot 40 and through the two support rollers 1, 2 guide the screen cylinder 10 in the direction perpendicular to its longitudinal direction Flat, but not in the longitudinal direction.
  • a radially projecting collar 6 is provided against which the there lies the front edge 10 'of the screen cylinder.
  • the edge 10 'of the wire mesh forming the screen cylinder 10 is welded and smoothed.
  • a fret 6 either at both ends of one Support roller may be provided or it must be at one end of the Screen cylinder 10 on a support roller a collar 6 and the other end of the screen cylinder 10 a collar 6 on the other support roller 2 may be attached.
  • the screen cylinder 10 is a cylinder in mathematical terms Senses insofar as its generators are all parallel to it a certain straight line. But he doesn't have one certain cross-section, especially no rigid circular cross-section. There is also no dimensional stability of the Sieve cylinder 10 supporting reinforcement rings or like.
  • the screen cylinder 10 is rather exclusively from the wire mesh 11 and is easily deformable, i.e. it can be squeezed by hand in the transverse direction become. It is not completely limp, but still has a certain rigidity, so that a Sieve cylinders of 2 to 3.6 m in length and a "diameter" from 300 to 450 mm just standing upright can.
  • the material of the wire mesh forming the screen cylinder 10 11 is corrosion-resistant steel with a diameter of 0.3 mm.
  • the tissue from this wire is designed so that in the exemplary embodiment an opening percentage of 70% gives what the efficiency of suction through the suction slot 40 is beneficial. Nevertheless, the wire mesh is 11 beaten pretty close, so the support points corresponding to the web W close together.
  • the screen cylinder has 10 in none installed in the suction device 100 Circular cross section, but a cross section in shape of a triangle with very rounded corners.
  • the screen cylinder 10 lies on the sliders 31 at corners, that limit the suction slot 40, in the other two "Corners" on the outer circumference of the support rollers 1, 2 there.
  • the leadership is such that in the screen cylinder 10 hardly There is tension in the circumferential direction and the screen cylinder 10 not pulled tight around the support rollers 1, 2 is. The latter would cause the screen cylinder 10 at a wrap angle of about 120 ° the support rollers 1, 2 plant, for which a considerable longitudinal tensile force would be spent in the screen cylinder.
  • the screen cylinder 10 is quite loose around the Suction slot 40 limiting components and the support rollers 1, 2 guided, so that starting from a force-free state, in which the screen cylinder 10 essentially by itself assumes a circular cross section, just that from FIG. 1 apparent approximate triangular shape.
  • the contact forces on the support rollers 1, 2 are not zero, but not very high either. It results in a low "wrap angle" 15 (Fig. 1), which in the Embodiment is approximately 15 ° and does not exceed 30 ° should, otherwise the tensile stress in the circumferential direction gets correspondingly higher and problems with the lateral gradient forces occur.
  • the screen cylinder 10 should therefore just be loosely guided around the support rollers 1, 2, that its longitudinal guide is shown in Fig. 2 simple way, so without swiveling and can do the same - but not completely free of forces, because in the case of an external rotary drive one the support rollers 1, 2 a certain torque transmission should be possible.
  • Fig. 1 the support rollers 1, 2 are not driven.
  • the Driving the screen cylinder 10 and the rotation of the support rollers 1, 2 are carried out exclusively by the web W. Due to the presence of the screen cylinder 10 is a such entrainment possible over the suction slot 40, without inadmissible longitudinal tensile stresses in the web W. are recorded.
  • the web W comes out of a treatment bath soaking wet from below, but first runs over one driven spreader roller 3 to a tendency to Counteract curling. From the spreader roller 3, the web W goes almost directly to the scope a drainage roller 4 over against the outside the screen cylinder 10 rests at a point where inside a support roller 2 ', which is the location of the Support roller 2 in Fig. 1 takes, but is driven. The Material web W thus runs together with the screen cylinder 10 between the support roller 2 and the dewatering roller 4 formed nip 5.
  • nip 5 is the web W of the main amount of the entrained Water, especially surface water, frees and runs after leaving the nip 5 in pre-dehumidified Condition over an approximately 120 ° circumferential section of the screen cylinder 10 before the suction slot reached in which the final dehumidification takes place, by the previous removal of the bulk the water in the roll gap 5 more uniform and penetrating can go on.
  • One of the support rollers 1, 2 can also be driven if without the roll gap 5 being formed and an spreader roll 3 is present.
  • a drive of one of the support rollers 1, 2 reduces that of the web W for the circulation of the Sieve cylinder 10 forces to be practically up to Zero.
  • the web W is carried along by the screen cylinder 10 and passes through the suction slot 40 without arising of forces in the area of the web W.
  • the ends of the suction chamber 20 protrude from the sieve cylinder 20 ' 10 before and is outside of the screen cylinder 10 suitable, indicated only by dash-dotted lines in FIG. 4 Supports 22 supported in the machine frame. At the ends is the suction chamber through flanged cover plates 23 sealed for the purpose of cleaning the suction chamber 20 can be removed.
  • the suction chamber 20 has the Fig. 1 apparent closed octagon cross-section. in the middle range, i.e. over the length of the screen cylinder 10, however, has the suction chamber 20 according to FIGS. 4 to 6 upwardly extending mutually parallel wall parts 24 on that are rectangular at their upper edges wear outward bends 25 each. Between the mutually parallel wall parts 24 (FIG. 6) are extending over the length of the screen cylinder 10 Flat bars 26, 26 are provided between the ends another flat iron 27 which grips the width of the determined between the flat iron 26, 26 formed suction gap and at the same time serves stabilization, in so far it is connected to a transverse link 28, which means Screws 29 on the top of the suction chamber 20 Supports 30 is attached.
  • the sliders 31 for the Screen cylinder 10 attached from a suitable, low-friction and wear-resistant plastic, the length of the bends 25 between the support 30 extend and in the manner shown in Fig. 6 are fastened by screws 32 to the bends 25.
  • the sliders 31 leave a gap between them that forms the suction slot 40.
  • In the facing each other End faces 31 'of the sliders 31 are over the Length of the sliders 31 parallel to their upper sliding surface 31 '' extending triangular grooves 33 are provided, which with assembled sliders 31 to a square add free cross section, in which on each End of the suction slot 40 precisely fitting limiting rods 34 sit to limit the suction slot 40 in Serve width direction of the web W.
  • the boundary bars 34 are by means of so-called Bowden trains 35 in the Grooves 33 slidable in their longitudinal direction by the exit width of the suction slot 40 to the web width adapt.
  • Suction nozzle 36 At the left end of the suction chamber 20 in FIG arranged perpendicular to the longitudinal extent of the suction chamber 20 Suction nozzle 36 provided, the cross section of which is quite is large and approximately one in the exemplary embodiment Third of the cross section of the suction chamber 20 is and the one connected to a vacuum pump via flanges 37 Line 38 is connected. Between the flanges 37 is a flap valve designated as a whole by 39 arranged with which the suction effect is interrupted can be. The pressure in the suction chamber 20 is dependent controllable according to the desired dehumidification effect and can be measured on a measuring nozzle 41.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Manipulator (AREA)
  • Branching, Merging, And Special Transfer Between Conveyors (AREA)
  • Massaging Devices (AREA)

Claims (11)

  1. Dispositif d'aspiration (100) pour assécher une bande de matériau textile (W) perméable à l'air, comprenant
    un cylindre de tamisage (10) pouvant tourner sur lui-même, non renforcé en ce qui concerne la forme de sa section qui peut fléchir pendant sa rotation,
    une chambre d'aspiration (20) montée dans le cylindre de tamisage (12) parallèlement à la direction longitudinale de celui-ci et pouvant être raccordée à une pompe à vide, cette chambre formant, entre des parties de sa paroi (24, 31 ; 24, 31) voisines en direction périphérique et faisant saillie vers la périphérie interne du cylindre (10) avec leurs bords appliqués sur cette périphérie, une fente d'aspiration (40) parallèle à la direction longitudinale du cylindre de tamisage (10) et sur laquelle glisse quand il tourne ce cylindre qui porte la bande de matériau textile (W),
    des moyens pour guider la bande (W) sur la périphérie externe du cylindre (10) dans une zone contenant la fente d'aspiration (40),
    caractérisé en ce que
    le cylindre de tamisage (10) est un grillage métallique (11) à mailles fines, avec un diamètre de fil de 0,2 à 0,8 mm et une proposition d'ouverture d'au moins 60 %,
    le cylindre de tamisage (10), sous une tension de traction en direction longitudinale qui n'est qu'assez faible, circule pratiquement librement autour de la chambre d'aspiration (20), et
    des moyens de soutien du cylindre de tamisage (10) tournant sur lui-même sont prévus dans un plan perpendiculaire à la direction longitudinale du cylindre (10).
  2. Dispositif d'aspiration selon la revendication 1,
    caractérisé en ce que
    dans le cylindre de tamisage (10) est monté, en tant que moyen de soutien du cylindre tournant sur lui-même, au moins un rouleau de soutien tournant couvrant la longueur du cylindre, décalé en direction périphérique par rapport à la fente d'aspiration (40) et appliqué contre le cylindre (10).
  3. Dispositif d'aspiration selon la revendication 2,
    caractérisé en ce que
    deux rouleaux de soutien (1, 2) sont montés à l'intérieur du cylindre de tamisage (10), symétriquement par rapport à un plan défini par l'axe (A) de la chambre d'aspiration (20) et par la fente d'aspiration (40).
  4. Dispositif d'aspiration selon la revendication 3,
    caractérisé en ce que
    les plans définis par l'axe (A) de la chambre d'aspiration (20) et les axes des rouleaux de soutien (1, 2) font entre eux un angle de 120° à 165°.
  5. Dispositif d'aspiration selon l'une quelconque des revendications 2 à 4,
    caractérisé en ce que
    le développement du cylindre de tamisage (10) a une longueur supérieure à la longueur minimale d'un cylindre qui circulerait tendu autour de la chambre d'aspiration (20) en passant sur la fente (40) et sur les rouleaux de soutien (1, 2), et inférieure à la longueur périphérique d'un cylindre de section circulaire qui serait seulement en contact avec les parties de paroi encadrant la fente d'aspiration (40) et les rouleaux de soutien (1, 2).
  6. Dispositif d'aspiration selon l'une quelconque des revendications 2 à 5,
    caractérisé en ce que
    radialement à l'extérieur du cylindre de tamisage (10) et parallèlement à celui-ci est monté en rotation en face du rouleau de soutien (2') situé du côté de l'entrée de la bande de matériau (W), un rouleau d'assèchement (4) qui forme avec le rouleau (2') une fente de laminage (5).
  7. Dispositif d'aspiration selon la revendication 6,
    caractérisé en ce que
    directement en amont de la fente de laminage (5) est monté, parallèlement au cylindre de tamisage (10), un cylindre élargisseur sur lequel passe la bande de matériau (W).
  8. Dispositif d'aspiration selon l'une quelconque des revendications 2 à 7,
    caractérisé en ce qu'
    au moins un des rouleaux de soutien (1, 2) est entraíné.
  9. Dispositif d'aspiration selon la revendication 8,
    caractérisé en ce que
    le rouleau de soutien (2') formant avec le rouleau d'assèchement (4) la fente de laminage (5) est entraíné.
  10. Dispositif d'aspiration selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce que
    des moyens sont prévus pour guider le cylindre de tamisage (10) selon sa direction longitudinale.
  11. Dispositif d'aspiration selon la revendication 10,
    caractérisé en ce qu'
    au moins un des rouleaux de soutien (1, 2) présente à au moins une extrémité, un collet radial (6) le long duquel le cylindre de tamisage (10) peut venir en appui par son bord frontal (10').
EP98107580A 1997-05-09 1998-04-25 Dispositif d'aspiration Expired - Lifetime EP0877115B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29708262U 1997-05-09
DE29708262U DE29708262U1 (de) 1997-05-09 1997-05-09 Saugvorrichtung

Publications (3)

Publication Number Publication Date
EP0877115A2 EP0877115A2 (fr) 1998-11-11
EP0877115A3 EP0877115A3 (fr) 1999-10-20
EP0877115B1 true EP0877115B1 (fr) 2002-08-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP98107580A Expired - Lifetime EP0877115B1 (fr) 1997-05-09 1998-04-25 Dispositif d'aspiration

Country Status (2)

Country Link
EP (1) EP0877115B1 (fr)
DE (2) DE29708262U1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105463725A (zh) * 2016-01-28 2016-04-06 广州睿联电气科技有限公司 尼龙管吸水机
CN108468222B (zh) * 2017-07-18 2019-11-29 杭州安杰诺智能机械有限公司 真空吸排机及其使用方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2000436A1 (de) * 1970-01-07 1971-07-15 Jwi Ltd Als Aussendecke einer Trockentrommel geeignetes Drahtgewebe und mit demselben ausgeruestete Trockentrommel
DE2403815A1 (de) * 1974-01-26 1975-08-07 Kuesters Eduard Verfahren zur behandlung von textil-, vlies- und aehnlichen bahnen
DE2419061A1 (de) * 1974-04-20 1975-11-06 Artos Meier Windhorst Kg Absaugvorrichtung fuer spannungsempfindliche warenbahnen
DE2723085C2 (de) * 1977-05-21 1983-06-30 Kleinewefers Gmbh, 4150 Krefeld Gewebtes endloses Andrück- und Führungsband für mit einer Drehtrommel verseheneTextilbehandlungsvorrichtungen wie Transferdruckmaschinen, Dämpfkalander od. dgl.

Also Published As

Publication number Publication date
EP0877115A2 (fr) 1998-11-11
DE59805283D1 (de) 2002-10-02
EP0877115A3 (fr) 1999-10-20
DE29708262U1 (de) 1998-09-17

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