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WO2025016818A1 - Ensemble d'étanchéité pour un arbre d'entraînement d'un système de solution de substance, et système de solution de substance - Google Patents

Ensemble d'étanchéité pour un arbre d'entraînement d'un système de solution de substance, et système de solution de substance Download PDF

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Publication number
WO2025016818A1
WO2025016818A1 PCT/EP2024/069421 EP2024069421W WO2025016818A1 WO 2025016818 A1 WO2025016818 A1 WO 2025016818A1 EP 2024069421 W EP2024069421 W EP 2024069421W WO 2025016818 A1 WO2025016818 A1 WO 2025016818A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing
packing
housing
drive shaft
wall
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.)
Pending
Application number
PCT/EP2024/069421
Other languages
German (de)
English (en)
Inventor
Wolfgang Müller
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.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
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 Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of WO2025016818A1 publication Critical patent/WO2025016818A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
    • F16J15/20—Packing materials therefor
    • F16J15/22—Packing materials therefor shaped as strands, ropes, threads, ribbons, or the like

Definitions

  • the present disclosure relates to a sealing arrangement for a drive shaft of a dosing system and a dosing system having such a sealing arrangement.
  • the present disclosure relates to a shaft seal having a floating water ring to provide clearance for radial movement of a drive shaft.
  • pulpers are often used to dissolve waste paper or pulp and convert it into a pumpable suspension suitable for paper production.
  • the pulper comprises a large container into which water and waste paper are fed.
  • a rotating rotor such as a vane rotor, is arranged inside the container to shred the waste paper in the container. Once a desired stock density has been reached, the container can be emptied and the contents fed into further process steps for the production of paper.
  • Typical rotor blade shapes include backward curved blades to achieve a pumping action in the container without requiring excessive amounts of energy.
  • the waste paper fed into the container is often in the form of bales or other initially solid packages, so that strong forces perpendicular to a rotation axis can arise when the rotor rotates. This leads to a temporary radial deflection of a drive shaft connected to the rotor. Such a radial offset creates mechanical stress and leads to faster wear of components, in particular a sealing arrangement in which the drive shaft is mounted.
  • US 1,085,196, CH430355 A discloses a shaft seal whose essential feature is that the seal is divided into a radial and an axial seal.
  • a ring housing with a U-shaped cross-section is provided to accommodate the sealing parts.
  • Two sealing rings are arranged in the ring housing, which act radially in the same direction and axially in opposite directions away from each other.
  • a common spring is provided to press both sealing rings onto their axial sealing points.
  • US1,O52,735 discloses a shaft seal with a lip seal.
  • the angled lip seal is made of a flexible material such as glass-filled Teflon.
  • the sealing lip is pressed radially inward onto the shaft by a spring element.
  • a sealing arrangement for a drive shaft is specified, in particular for a system for dissolving stock, in particular a pulper.
  • the sealing arrangement can also be referred to as a “shaft seal”.
  • the sealing arrangement comprises a housing; a receiving space within the housing, the receiving space being adapted to receive a drive shaft; a plurality of sealing packings between an inner wall of the housing and the receiving space; and a sealing ring.
  • the plurality of packings are annularly formed and surround the receiving space.
  • the plurality of packings comprise a first packing and a second packing, wherein outermost peripheral portions of the first packing and the second packing are spaced from the inner wall of the housing.
  • the sealing ring is at least partially disposed between the first packing and the second packing to provide or maintain a spacing between the first packing and the second packing.
  • An outermost peripheral portion of the sealing ring is spaced from the inner wall of the housing to allow radial movement of the first packing, the second packing and the sealing ring toward the inner wall of the housing caused by the drive shaft.
  • the sealing ring can also be called a “water ring”.
  • both the seal packings and the sealing ring are spaced from the inner wall of the housing, so that clearance is created for a temporary radial movement of the drive shaft.
  • packings generally refers to braided Materials and/or woven materials, e.g., arranged or wrapped around a driven shaft to minimize fluid loss. Additionally, a lubricating fluid may be provided to minimize friction between the packing and the shaft. In some embodiments, the packing may be at least partially saturated with the lubricating fluid.
  • the sealing packings comprise fibers as a braided material.
  • the braided material in particular determines a surface structure of the sealing packings.
  • the material of the packing gaskets may be selected from the group comprising or consisting of Teflon (PTFE), graphite, Kevlar, and combinations thereof.
  • the housing is at least partially cylindrical.
  • the inner wall can have a cylindrical shape.
  • the receiving space has a longitudinal axis that is substantially perpendicular to the radial movement of the drive shaft.
  • the longitudinal axis of the receiving space can, in some embodiments, be substantially parallel to a rotation axis of the drive shaft.
  • the receiving space is cylindrical.
  • the longitudinal axis of the receiving space can correspond to a cylinder axis or be the cylinder axis.
  • each annular sealing packing surrounds the receiving space in a circumferential direction.
  • each annular sealing packing has a longitudinal axis that is substantially perpendicular to the radial movement of the drive shaft and/or substantially parallel to the longitudinal axis of the receiving space and/or substantially parallel to the axis of rotation of the drive shaft.
  • the plurality of sealing packs are arranged one after the other along the longitudinal axis of the receiving space.
  • the sealing packs can be stacked on top of one another along the longitudinal axis of the receiving space.
  • the sealing arrangement further comprises a fluid space between the inner wall of the housing and the receiving space.
  • the fluid space can be filled at least partially with a cooling and/or cleaning fluid via an inlet.
  • the cooling and/or cleaning fluid can be introduced into the fluid space to remove frictional heat and/or foreign material.
  • the frictional heat can be generated by the rotation of the drive shaft relative to the static sealing arrangement.
  • the foreign material can also be removed due to the rotation of the Drive shaft relative to the static sealing arrangement, for example in the form of abrasion.
  • the foreign material can be, for example, paper fiber, fillers and abrasive components from the waste paper (sand, glass, etc.). These are flushed to the left, i.e. back into the process. Only sealing water exits to the right.
  • the fluid mainly takes the path via the opening 136 to the sealing gap between 120 and 14.
  • the first sealing packing, the second sealing packing and the sealing ring are arranged in the fluid space.
  • the first sealing packing, the second sealing packing and the sealing ring only take up part of the volume of the fluid space, so that the free part of the volume of the fluid space can be filled with the cooling and/or cleaning fluid.
  • the sealing ring comprises a first portion, a second portion and a middle portion between the first portion and the second portion.
  • the middle portion can connect the first portion and the second portion to each other.
  • the middle section is arranged between the first sealing packing and the second sealing packing to provide or maintain the distance between the first sealing packing and the second sealing packing.
  • the middle section can be arranged between the first sealing packing and the second sealing packing in the direction of the longitudinal axis of the receiving space and/or the longitudinal axis of the sealing ring in order to provide or maintain the distance between the first sealing packing and the second sealing packing in the direction of the longitudinal axis of the receiving space and/or the longitudinal axis of the sealing ring.
  • the middle section can thus serve as a spacer in the longitudinal direction and/or as a sealing fluid distributor.
  • the first portion extends at least partially over the outermost peripheral portion of the first packing, and the second portion extends at least partially over the outermost peripheral portion of the second packing. This allows the first packing and the second packing to be fixed.
  • a distance in the radial direction between the outermost peripheral portion of the sealing ring and the inner wall of the housing is in the range between 0.5 mm and 5 mm or in the range between 0.5 mm and 2 mm to enable the radial movement of the first sealing packing, the second sealing packing and the sealing ring towards the inner wall of the housing in this range.
  • the outermost peripheral portion of the sealing ring may correspond to an outermost peripheral portion (e.g., an outer peripheral surface) of the first portion and/or an outermost peripheral portion (e.g., an outer peripheral surface) of the second portion of the sealing ring.
  • a distance in the radial direction between the outermost peripheral section (e.g. the outer peripheral surface) of the second section and the inner wall of the housing can be in the range between 0.5mm and 5mm or in the range between 0.5mm and 2mm to enable the radial movement of the first packing, the second packing and the sealing ring towards the inner wall of the housing in this range.
  • a distance in the radial direction between an outer peripheral surface of the central cut and the inner wall of the housing may be greater than the distance in the radial direction between the outermost peripheral portion (e.g., the outer peripheral surface) of the first portion and the inner wall of the housing. Additionally or alternatively, the distance in the radial direction between the outer peripheral surface of the central cut and the inner wall of the housing may be greater than the distance in the radial direction between the outermost peripheral portion (e.g., the outer peripheral surface) of the second portion and the inner wall of the housing.
  • a distance in the radial direction between an outer peripheral surface of the central portion and the inner wall of the housing may be in the range between 0.5 mm and 5 mm or in the range between 0.5 mm and 2 mm.
  • the sealing ring is formed integrally or in one piece.
  • the first section, the second section and the middle section can be formed integrally or in one piece.
  • the sealing ring comprises at least one opening, wherein holding means can be inserted into the at least one opening in order to prevent a rotational movement of the sealing ring, e.g. about its longitudinal axis and/or the longitudinal axis of the receiving space and/or the axis of rotation of the drive shaft.
  • the at least one opening comprises or is a hole or bore, in particular a through hole or through bore.
  • the holding means comprise or are at least one holding bolt that can be inserted into the at least one opening.
  • a longitudinal axis of the at least one holding bolt can be aligned substantially perpendicular to the longitudinal axis of the receiving space and/or to the longitudinal axis of the sealing ring and/or to the axis of rotation of the drive shaft.
  • the longitudinal axis of the at least one holding bolt can extend in the radial direction.
  • the middle portion of the sealing ring comprises the at least one opening.
  • the present disclosure is not limited thereto and the first portion and/or the second portion and/or the middle portion may be provided with one or more openings for the holding means.
  • the holding means can be connected to the housing.
  • the housing can comprise at least one recess or at least one through hole (or at least one through bore) which corresponds to the at least one opening in the sealing ring and into which the holding means can be inserted. This allows the sealing ring to be fixed relative to the housing and prevents rotational movement due to the rotation of the drive shaft.
  • the sealing ring comprises a plastic or consists of the plastic. It is also possible to form the sealing ring from metal and plastic.
  • the plastic of the sealing ring may comprise or consist of Teflon (polytetrafluoroethylene, PTFE) or polyoxymethylene (POM).
  • the sealing arrangement further comprises a spacer ring arranged adjacent to the first sealing packing or second sealing packing between the inner wall of the housing and the receiving space.
  • the spacer ring may be axially movable.
  • the spacer ring may comprise a metallic material or may be made of the metallic material.
  • the metallic material may be, for example, aluminum or stainless steel.
  • the plurality of sealing packs comprise at least one further sealing pack arranged adjacent to the first sealing pack and/or second sealing pack between the inner wall of the housing and the receiving space.
  • the at least one further sealing packing may contact the inner wall of the housing to prevent leakage of fluid between the sealing packing and the inner wall of the housing.
  • the spacer ring may be disposed between the at least one further packing and the first packing or the second packing.
  • the plurality of seal packings are arranged for contact with the drive shaft.
  • another annular sealing element or sealing material may also be arranged between the spacer ring 140 and the housing 114, e.g. an O-ring.
  • the sealing arrangement further comprises tensioning means arranged adjacent to the plurality of sealing packs and arranged to apply a force to the plurality of sealing packs substantially parallel to a longitudinal axis of the plurality of sealing packings and/or to the longitudinal axis of the receiving space and/or to the longitudinal axis of the sealing ring and/or to the axis of rotation of the drive shaft.
  • the clamping means may comprise a contact element and at least one elastic element connected to the contact element.
  • the contact element may contact a (last or outermost) sealing packing of the plurality of sealing packings and exert the force on this sealing packing.
  • the plurality of sealing packings are thus pressed, whereby a stabilization of the plurality of sealing packings can be achieved.
  • the contact element is ring-shaped.
  • the contact element is designed as a so-called “gland follower” or as a stuffing box gland.
  • the at least one resilient element comprises or is a spring.
  • a system for dissolving material comprises a container adapted to receive a material to be dissolved; a drive shaft; a rotor attached to one end of the drive shaft, the rotor adapted to shred the material; and a sealing arrangement according to the embodiments described in this document, the drive shaft being rotatably mounted in the sealing arrangement.
  • the system is set up for the processing of waste paper, paper-containing virgin material and paper-containing production waste.
  • the system is a pulper, i.e. a large agitated tank used in the paper, board or cardboard industry to dissolve waste paper, production rejects or pulp and convert them into a pumpable suspension suitable for paper production.
  • a pulper i.e. a large agitated tank used in the paper, board or cardboard industry to dissolve waste paper, production rejects or pulp and convert them into a pumpable suspension suitable for paper production.
  • Figure 1 schematically shows a system for dissolving substances according to embodiments of the present disclosure
  • Figure 2 schematically shows a sectional view of a sealing arrangement for a drive shaft of a system for dissolving substances according to embodiments of the present disclosure
  • Figure 3 schematically shows a perspective view of a sealing arrangement for a drive shaft of a substance dissolving system according to embodiments of the present disclosure.
  • FIG. 10 schematically shows a system 10 for dissolving matter according to embodiments of the present disclosure.
  • the system 10 is a pulper designed to dissolve waste paper, production rejects or pulp and to convert them into a pumpable suspension suitable for paper production.
  • the system 10 comprises a container 12 into which a material S to be dissolved, such as waste paper, and water W are supplied.
  • the system 10 further comprises a rotatable drive shaft 14 driven by a drive 18, such as an electric motor, and a rotor 16 attached to one end of the drive shaft 14, the rotor 16 being adapted to shred or dissolve the material S.
  • the drive shaft 14 is rotatably mounted in a sealing arrangement 100.
  • the waste paper fed into the container 12 is often in the form of bales or other initially solid packages, so that when the rotor 16 rotates, strong forces can arise perpendicular to a rotation axis DA. This leads to a temporary radial deflection of the drive shaft 14 connected to the rotor 16. Such a radial offset creates mechanical stress and leads to faster wear of components, in particular the sealing arrangement 100 in which the drive shaft 14 is mounted. The radial deflection of the drive shaft 14 can allow liquid to penetrate into the sealing arrangement 100 and accelerate wear.
  • the embodiments of the present disclosure enable such wear of the seal assembly 100 due to the temporary radial deflection of the drive shaft 14 connected to the rotor 16 to be reduced.
  • Figure 2 schematically shows a sectional view of a sealing arrangement 100 for a drive shaft 14 of a system for dissolving matter according to embodiments of the present disclosure.
  • Figure 3 schematically shows a perspective view of the sealing arrangement 100.
  • a sealing arrangement 100 can be used for any drive shaft 14.
  • the sealing arrangement 100 is described by way of example for a drive shaft 14 for a system for pulping, i.e. for a drive shaft of a pulper which is used in paper production or waste paper processing.
  • the sealing arrangement 100 comprises a housing 110 and a receiving space within the housing 110.
  • the receiving space is designed to receive a drive shaft 14.
  • At least two sealing packings 120a, 120b, 120c are arranged between an inner wall 116 of the housing 110 and the receiving space.
  • the sealing arrangement 100 further comprises a sealing ring 130.
  • the at least two or more packings 120a, 120b, 120c are ring-shaped and surround the receiving space.
  • the plurality of packings 120a, 120b, 120c contact the drive shaft 14.
  • the plurality of packings 120a, 120b, 120c can be braided, rope-like or fabric-like structures that fit tightly around or on the drive shaft 14 to minimize fluid loss.
  • a lubricating fluid may be provided to minimize friction between the plurality of packings 120a, 120b, 120c and the drive shaft 14 and to minimize backflushing of contaminants into the process.
  • the plurality of packing gaskets 120a, 120b, 120c comprise a first packing gasket 120a and a second packing gasket 120b, wherein outermost peripheral portions 122a, 122b of the first packing gasket 120a and the second packing gasket 120b are spaced apart from the inner wall 116 of the housing 110. That is, there is a space between the inner wall 116 of the housing 110 and the two packing gaskets 122a, 122b.
  • the sealing ring 130 is at least partially disposed or inserted between the first sealing packing 120a and the second sealing packing 120b to provide or maintain a distance dl between the first sealing packing 120a and the second sealing packing 120b.
  • An outermost circumferential portion 134a, 134b of the sealing ring 130 is spaced from the inner wall 116 of the housing 110 by a distance d2 (e.g. in the range between 0.5 mm and 5 mm or in the range between 0.5 mm and 2 mm) to allow a radial movement RB of the first sealing packing 120a, the second sealing packing 120b and the sealing ring 130 towards the inner wall 116 of the housing 110 caused by the drive shaft 14.
  • a distance d2 e.g. in the range between 0.5 mm and 5 mm or in the range between 0.5 mm and 2 mm
  • the receiving space has a longitudinal axis LAI which runs essentially perpendicular to the radial movements RB of the drive shaft 14.
  • the longitudinal axis LAI of the receiving space can run essentially parallel to a rotational axis DA of the drive shaft 14.
  • the receiving space can be cylindrical and correspond to a shape of the drive shaft 14.
  • each annular seal packing 120a, 120b, 120c surround the drive shaft 14 in a circumferential direction of the drive shaft 14 within the receiving space.
  • each annular seal packing 120a, 120b, 120c has a longitudinal axis LA2 that is substantially perpendicular to the radial movements RB of the drive shaft 14 and/or substantially parallel to the longitudinal axis LAI of the receiving space and/or substantially parallel to the rotational axis DA of the drive shaft 14.
  • the plurality of packings 120a, 120b, 120c are arranged one after another in the direction of the longitudinal axis LAI of the receiving space.
  • the packings 120a, 120b, 120c can be stacked along the longitudinal axis LAI of the receiving space.
  • the sealing arrangement 100 can further comprise a fluid space FR between the inner wall 116 of the housing 110 and the receiving space.
  • the fluid space FR can be at least partially filled with a cooling and/or cleaning fluid via an inlet.
  • the cooling and/or cleaning fluid can be introduced into the fluid space FR in order to dissipate frictional heat and/or foreign material.
  • the frictional heat can arise due to the rotation of the drive shaft 14 relative to the static sealing arrangement 100.
  • the foreign material can also arise due to the rotation of the drive shaft 14 relative to the static sealing arrangement 110, for example in the form of abrasion.
  • the first sealing packing 120a, the second sealing packing 120b and the sealing ring 130 are arranged in the fluid space FR.
  • the first sealing packing 120a, the second sealing packing 120b and the sealing ring 130 only take up part of the volume of the fluid space FR, so that the free part of the volume of the fluid space FR can be filled with the cooling and/or cleaning fluid.
  • the fluid space FR is formed between the inner wall 116 of the housing 110 and an upper side of the sealing ring 130 and between an underside of the sealing ring 130 and the receiving space or the drive shaft 14.
  • the sealing ring 130 may comprise or be made of a plastic.
  • the plastic of the sealing ring 130 may comprise or be Teflon (polytetrafluoroethylene, PTFE).
  • the sealing ring 130 includes a first portion 132a, a second portion 132b, and a middle portion 132c between the first portion 132a and the second portion 132b.
  • the middle portion 132c may interconnect the first portion 132a and the second portion 132b.
  • the first portion 132a, the second portion 132b and the middle portion 132c may be formed integrally or in one piece.
  • the central portion 132c is arranged between the first sealing packing 120a and the second sealing packing 120b in order to provide or maintain the distance dl between the first sealing packing 120a and the second sealing packing 120b.
  • the central portion 132c can be arranged between the first sealing packing 120a and the second sealing packing 120b in the direction of the longitudinal axis LAI of the receiving space and/or the longitudinal axis LA3 of the sealing ring 130 in order to provide or maintain the distance dl between the first sealing packing 120a and the second sealing packing 120b in the direction of the longitudinal axis LAI of the receiving space and/or the longitudinal axis LA3 of the sealing ring.
  • the central portion 132c can thus serve as a spacer in the longitudinal direction.
  • the first portion 132a extends at least partially over the outermost peripheral portion 122a of the first packing 120a, and the second portion 132b extends at least partially over the outermost peripheral portion 122b of the second packing 120b. This allows the first packing 120a and the second packing 120b to be fixed in the longitudinal direction.
  • a distance (eg the distance d2) in the radial direction between the outermost circumferential portion 134a of the first portion 132a and the inner wall 116 of the housing 110 can be in the range between 0.5mm and 5mm or in the range between 0.5mm and 2mm.
  • a distance (eg the distance d2) in the radial direction between the outermost circumferential portion 134b of the second portion 132b and the inner wall 116 of the housing 110 can be in the range between 0.5mm and 5mm or in the range between 0.5mm and 2mm.
  • a distance d3 in the radial direction between an outer peripheral surface 134c of the middle section 132c and the inner wall 116 of the housing 110 may be greater than the distance (e.g., the distance d2) in the radial direction between the outermost peripheral section 134a of the first section 132a and the inner wall 116 of the housing 110.
  • the distance d3 in the radial direction between the outer peripheral surface 134c of the middle section 132c and the inner wall 116 of the housing 110 may be greater than the distance (e.g., the distance d2) in the radial direction between the outermost peripheral section 134b of the second section 132b and the inner wall 116 of the housing 110.
  • the sealing ring 130 may further comprise at least one opening 136, e.g. in the central portion 132c, wherein holding means HM can be inserted into the at least one opening 136 in order to prevent a rotational movement of the sealing ring 130, e.g. about its longitudinal axis LA3 and/or the longitudinal axis of the receiving space LAI and/or the axis of rotation DA of the drive shaft 14.
  • the holding means HM can comprise at least one holding bolt that can be inserted into the at least one opening 136.
  • a longitudinal axis of the at least one holding bolt can be aligned substantially perpendicular to the longitudinal axis LAI of the receiving space and/or to the longitudinal axis LA3 of the sealing ring 130 and/or to the axis of rotation DA of the drive shaft 14.
  • the longitudinal axis of the at least one holding bolt can extend in the radial direction.
  • the holding means HM can be connected to the housing 110.
  • the housing 110 can comprise at least one recess or at least one through hole 118, e.g. in the inner wall 116, which corresponds to the at least one opening 136 in the sealing ring 130 and into which the holding means HM can be inserted.
  • the sealing ring 130 can thus be fixed relative to the housing 110 and a rotational movement due to the rotation of the drive shaft 14 can be prevented.
  • the sealing arrangement 100 may further comprise a spacer ring 140 arranged adjacent to the second sealing packing 120b (or adjacent to the first sealing packing 120a; not shown) between the inner wall 116 of the housing 110 and the receiving space.
  • the spacer ring 140 may be axially/radially movable or have play.
  • the spacer ring 140 may comprise a metallic material or be made of the metallic material, such as aluminum or stainless steel.
  • At least one further sealing packing 120c may be provided, which is arranged adjacent to the first sealing packing 120a and/or second sealing packing 120b between the inner wall 116 of the housing 110 and the receiving space.
  • the spacer ring 140 may be arranged between the at least one further sealing packing 120c and the second sealing packing 120b. The at least one further sealing packing 120c may contact the inner wall 116 of the housing 110.
  • the sealing arrangement 100 may further comprise clamping means 150 arranged adjacent to the plurality of sealing packs 120a, 120b, 120c and arranged to provide a Force F is to be exerted on the plurality of sealing packs 120a, 120b, 120c substantially parallel to the longitudinal axis LA2 of the plurality of sealing packs 120a, 120b, 120c and/or to the longitudinal axis of the receiving space LAI and/or to the longitudinal axis of the sealing ring LA3 and/or to the axis of rotation DA of the drive shaft 14.
  • the clamping means 150 may comprise, for example, an annular contact element 152 and at least one elastic element 154 that is connected to the contact element 152.
  • the at least one elastic element 154 may comprise a spring or may be a spring.
  • the contact element 152 may contact a (last or outermost) sealing pack of the plurality of sealing packs 120a, 120b, 120c and exert the force F on this sealing pack.
  • the plurality of sealing packs 120a, 120b, 120c are thus pressed, whereby a stabilization of the plurality of sealing packs 120a, 120b, 120c can be achieved.
  • both the sealing packings and the sealing ring are spaced from the inner wall of the housing, so that clearance is created for a temporary radial movement of the drive shaft.
  • fewer forces act on the sealing arrangement so that wear of the sealing arrangement due to radial movements of the drive shaft can be reduced, which in turn increases the service life of the sealing arrangement.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)

Abstract

La présente divulgation concerne un ensemble d'étanchéité (100) pour un arbre d'entraînement (14) d'un système de solution de substance (10), comprenant un boîtier (110) ; un espace de réception à l'intérieur du boîtier (110), l'espace de réception étant conçu pour recevoir un arbre d'entraînement (14) ; une multiplicité de blocs d'étanchéité (120a, 120b, 120c) entre une paroi interne (116) du boîtier (110) et l'espace de réception, la multiplicité de blocs d'étanchéité (120a, 120b, 120c) étant annulaire et entourant l'espace de réception, la multiplicité de blocs d'étanchéité (120a, 120b, 120c) comprenant un premier bloc d'étanchéité (120a) et un second bloc d'étanchéité (120b), et les parties périphériques les plus externes (122a, 122b) du premier bloc d'étanchéité (120a) et du second bloc d'étanchéité (120b) étant espacées de la paroi interne (116) du boîtier (110) ; et une bague d'étanchéité (130) qui est au moins partiellement disposée entre le premier bloc d'étanchéité (120a) et le second bloc d'étanchéité (120b) afin de fournir un espacement (d1) entre le premier bloc d'étanchéité (120a) et le second bloc d'étanchéité (120b), une partie périphérique la plus externe (134a, 134b) de la bague d'étanchéité (130) étant espacée de la paroi interne (116) du boîtier (110) afin de permettre un mouvement radial (RB), qui est provoqué par l'arbre d'entraînement (14), du premier bloc d'étanchéité (120a), du second bloc d'étanchéité (120b) et de la bague d'étanchéité (130) vers la paroi interne (116) du boîtier (110).
PCT/EP2024/069421 2023-07-19 2024-07-10 Ensemble d'étanchéité pour un arbre d'entraînement d'un système de solution de substance, et système de solution de substance Pending WO2025016818A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023119009 2023-07-19
DE102023119009.1 2023-07-19

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WO2025016818A1 true WO2025016818A1 (fr) 2025-01-23

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PCT/EP2024/069421 Pending WO2025016818A1 (fr) 2023-07-19 2024-07-10 Ensemble d'étanchéité pour un arbre d'entraînement d'un système de solution de substance, et système de solution de substance

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WO (1) WO2025016818A1 (fr)

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US1085196A (en) 1912-11-09 1914-01-27 Ira Shannon Downing Running-board for cars.
GB865429A (en) * 1958-01-09 1961-04-19 Twin Disc Clutch Co Fluid-cooled seal
CH430355A (de) 1965-02-04 1967-02-15 Huth & Soehne Carl Wellendichtung, insbesondere für schwingende Wellen
DE1241726B (de) 1963-12-16 1967-06-01 Waukesha Bearings Corp Wellenabdichtung auf Schiffen
JPH11286675A (ja) * 1998-03-31 1999-10-19 Nichias Corp グランドパッキンおよびその製造方法
DE19904761A1 (de) 1999-02-05 2000-09-07 Voith Sulzer Papiertech Patent Vorrichtung zum Abdichten einer Papierstoffsuspension an einer Wellendurchführung
JP2001032944A (ja) * 1999-07-19 2001-02-06 Nichias Corp グランドパッキン
JP2004263865A (ja) * 2003-02-12 2004-09-24 Sumitomo Chem Co Ltd ステム付容器およびこれを備えた反応装置

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DE1241726B (de) 1963-12-16 1967-06-01 Waukesha Bearings Corp Wellenabdichtung auf Schiffen
CH430355A (de) 1965-02-04 1967-02-15 Huth & Soehne Carl Wellendichtung, insbesondere für schwingende Wellen
JPH11286675A (ja) * 1998-03-31 1999-10-19 Nichias Corp グランドパッキンおよびその製造方法
DE19904761A1 (de) 1999-02-05 2000-09-07 Voith Sulzer Papiertech Patent Vorrichtung zum Abdichten einer Papierstoffsuspension an einer Wellendurchführung
JP2001032944A (ja) * 1999-07-19 2001-02-06 Nichias Corp グランドパッキン
JP2004263865A (ja) * 2003-02-12 2004-09-24 Sumitomo Chem Co Ltd ステム付容器およびこれを備えた反応装置

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